Tempering Valve should be installed to cool the water.
A tempering valve is also called an anti-scald valve.
The thermostat controls the temperature inside the tank between 120F to 140F.
A thermostat is just a switch that is actuated by temperature. The thermostat will activates one of the elements in response to a "request for heat" when it detects a water temperature below its predetermined point.
At 140 degrees F temperature water can cause a burn to the skin in five seconds.
The Tempering valve is the mixing chamber, where cold water is mixed with hot water.
It functions as a mixing device, mixing hot and cold water to generate the proper water temperature that is emitted from a certain outlet.
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HI. I need some help in understanding EXTRACTION OF METAL, so do we use ELECTROLYSIS as separating method of a molten solution of there ion to extract them from the solution ,or NOT
Yes, Electrolysis is used as a separating method of a molten solution of their ion to extract them from the solution.
What is Electrolysis?A non-spontaneous chemical reaction can be sped up using a process called electrolysis that uses direct electric current. As a step in the electrolytic cell-based separation of elements from naturally existing sources like ores, electrolysis is significant from a commercial standpoint.
The electric current used to trigger an artificial reaction Numerous elements were discovered and are still produced in today's industry by the electrolysis method, which can be used to separate a substance into its original components or elements.
Uses for electrolysis include
The removal of metals from their ores using this process.It is employed in the refinement of several metals, including copper and zinc.Chlorine is produced by the process of electrolysis.Many items we use every day are electroplated using electrolysis.To know more about electrolysis refer to: https://brainly.com/question/12054569
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For the calculating change in pH question, some of the volumes of acid required were very very small. The smallest volume that can be reasonably transferred with pipetteman is 2 microliters (2 x 106 liters) If the volume of acid that needs to be added is so small that there is no equipment available to measure and transfer the correct volume of acid, what could be done to successfully adjust the pH? a) Use a less concentrated acid to adjust the pH so the required volume would be larger b) Use a more concentrated acid to adjust the pH so the required volume would be larger c) Use a less concentrated acid to adjust the pH so the required volume would be smaller d) Use a more concentrated acid to adjust the pH so the required volume would be smaller
To successfully adjust the pH, as there was no equipment to measure and transfer the correct volume of acid, then A. Use a less concentrated acid to adjust the pH so the required volume would be larger.
What is an acid?This is a substance that changes the taste in water solution and changes blue litmus paper to red, reacts with some metals to liberate hydrogen, reacts with bases to form salts, and promotes chemical reactions (acid catalysis).
Hence because there was no equipment available to measure and transfer the correct volume of acid, the best and safest and most successful thing to be done is to use a less concentrated acid to adjust the pH so the required volume would be larger.
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A gas sample of 2.31 atm of oxygen gas and 3.75 atm of hydrogen gas that react to form water vapor. Assume the volume of the container and the temperature inside the container does not change.
Mole fraction of Oxygen=0.381
Mole fraction of Oxygen= (range of moles of oxygen) ÷(general moles)
also, mole fraction of oxygen = (partial stress of oxygen) ÷ (total strain)
consequently , mole fraction of Oxygen= (2.31 atm)÷(2.31 atm + 3.75 atm)
= 0.381
The mole fraction may be calculated by means of dividing the variety of moles of 1 element of a solution by the entire quantity of moles of all the additives of a solution. It is cited that the sum of the mole fraction of all of the components inside the solution should be identical to 1.
Mole fraction is a unit of awareness. in the solution, the relative amount of solute and solvents are measured by way of the mole fraction and it's far represented through “X.” The mole fraction is the variety of moles of a selected aspect inside the answer divided by way of the entire range of moles in the given answer.
Mole fraction is the ratio between the moles of a constituent and the sum of moles of all ingredients in a mixture. Mass fraction is the ratio between the mass of a constituent and the full mass of a mixture.
The question is incomplete. Please read below to find the missing content.
Assuming that only the listed gases are present, what would the mole fraction of oxygen gas be for each of the following situations? A gas sample of 2.31 atm of oxygen gas and 3.75 atm of hydrogen gas react to form water vapor. Assume the volume of the container and the temperature inside the container does not change.
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The main acid in the stomach is hydrochloric acid (HCl). Which chemical equations show a reaction that occurs when someone takes an antacid
Answer:
Mg(OH)2(s) + 2HCl(aq) => MgCl2(aq) + 2HCl(l)
Explanation:
The reaction that occurs in the stomach when one takes an antacid {Mg(OH)2} is termed as Neutralization reaction as it reacts with hydrochloric acid to form magnesium hydroxide and water.
The equation of reaction:
Mg(OH)2(s) + 2HCl(aq) => MgCl2(aq) + 2HCl(l)
John has been feeling ill all day. He arrives home from work and takes his temperature. Unfortunately, the thermometer shows his temperature in Celsius, and he can’t get it to change. It reads 40 degrees Celsius. What is his temperature in Fahrenheit?
Answer:
[tex]40 \times 1.8 + 32 = 104[/tex]Explanation:
The best way to change Celsius to Fahrenheit is to times it by 1.8 then plus 32
Which of these is an example of investigating an intensive property?
Oweighing sand in a bag
Omeasuring the length of wire
O determining if a rock is magnetic
Orecording the volume of water in a cylinder
An example of investigating an intensive property is determining if a rock is magnetic. That is option C.
What is intensive property?Intensive property is defined as the property of a substance that doesn't rely on the amount of the substance.
Examples of Intensive property include:
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A company sells a natural medicine with plant ingredients to help treat dementia, a disease in which people have a hard time remembering things. the natural ingredients in the medicine are most likely from which type of plant?
The type of plant should be ginkgo.
Ginkgo biloba is a popular herbal supplement used to improve memory and prevent dementia, presumably due to its antioxidant properties or anti-amyloid aggregation effects.
What is Dementia?Dementia is a term used to describe when a person's loss of certain behavioral abilities, such as remembering, thinking, and reasoning, interferes with their daily activities and life.
Dementia occurs when neurons in the brain stop functioning, lose their ability to communicate with other cells in the brain, and die. When people develop dementia, they may have problems with a variety of cognitive functions.
What Are Ginkgo Trees Used For?Aside from its decorative aspects, ginkgo biloba is a medical herb with numerous benefits. The tree is frequently used to treat a variety of ailments, including:
Insufficiency of cerebral arteriesDementiaCognitive dysfunctionsDizziness/vertigoMemory lapsesSexual dysfunction caused by SSRIsLearn more about Ginkgo biloba at:
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Thyroid hormone contains the mineral thyroid hormone contains the ________.
i. mineral iodine.
ii. sodium.
iii. iron.
iv. zinc.
v. thallium.
Thyroid hormone contains the mineral iodine (option I). Details about thyroid hormone can be found below.
What is the thyroid hormone?Thyroid hormone is the hormone produced by the thyroid gland of the body, which is a large butterfly-shaped endocrine gland situated on the front of the neck that produces various hormones.
The thyroid hormone is responsible for regulating metabolism, which controls the amount of calories burnt in a day.
One of the major minerals found in the thyroid is iodine. The thyroid gland absorbs iodine from the bloodstream, and then stores it to aid in the production of thyroid hormones.
Therefore, the thyroid hormone contains the mineral iodine.
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Which molecule will undergo only london dispersion forces when interacting with other molecules of the same kind?.
Molecules undergo London dispersion forces:
[tex]C_{4}H_{10}[/tex] is the molecule will undergo only London dispersion forces when interacting with other molecules of the same kind.
What are London dispersion forces?
A sort of force that interacts between atoms and molecules that is often electrically symmetric is referred to as a London dispersion force.When viewed from the nucleus, their electron distribution is frequently symmetrical. This dispersion force, which is also known as a transient attractive force, is frequently observed when the locations of the electrons in two nearby atoms cause the atoms to temporarily form dipoles.The bond is polar when there are significant variations between the elements' electronegativities; it is nonpolar when there are similarities. When the molecule's dipole moment is equal to O, it is nonpolar; when it differs from O, it is polar.The force at these molecules is known as the London dispersion force. In nonpolar molecules, the forces are weak, and partial charges must be induced so that they can bond. In polar molecules, partial charges caused by polarity result in a stronger link known as a dipole-dipole. The dipole-dipole is significantly stronger and known as a hydrogen bond if it is connected to a large electronegative atom (F, O, or N). Ionic force is the name for the attraction force at ionic substances.The intermolecular force in the letter an is the London dispersion force because the compound is nonpolar;Reason for incorrect options:
b: the compound is ionic because Na is a metal and the other part is covalent,
c: two compounds are possible: one is nonpolar and exhibits London dispersion force; the other is polar and exhibits dipole-dipole force; and
d: both compounds exhibit hydrogen bonds (H bonded to O, and H bonded to F).
NOTE: Your question is incomplete, but most probably your full question was, which molecule will undergo only London dispersion forces when interacting with other molecules of the same kind? Which molecule will undergo only London dispersion forces when interacting with other molecules of the same kind?
A. [tex]C_{4}H_{10}[/tex]
B. [tex]NaC_{2}H_{3}O_{2}[/tex]
C. [tex]CH_{2}C_{12}[/tex]
D. [tex]C_{2}H_{5}OH HF[/tex]
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calculate the number of moles in 2 kg of iron
Answer:
111600 moles
Explanation:
Number of moles= Mass ×Mr, where Mr is the relative molecular mass of the substance of interest. Note that the mass is calculated in terms of grams (1 kg= 1000 g), while the Mr can be found using the periodic table.
Mass of iron
= 2 kg
= 2(1000)
= 2000 g
Mr of iron= 55.8
Number of moles
= 2000(55.8)
= 111600 mol
Additional:
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https://brainly.com/question/21042927What is the balanced chemical reaction for Mg+H2=MgH, K+O2= KO, K+S= KS, Ba + Br2= BaBr, Ca + N2= CaN
(Giving brainliest for the answer that shows work) Please and thank you!
Answer:
1.) 2 Mg + H₂ ------> 2 MgH
2.) 2 K + O₂ -----> 2 KO
3.) K + S -----> KS
4.) 2 Ba + Br₂ -----> 2 BaBr
5.) 2 Ca + N₂ ------> 2 CaN
Explanation:
An equation is balanced when there is an equal amount of each element on both sides of a reaction. If there is an unequal amount, they can be altered by adding coefficients which modify the amount of an element/molecule. It is important that the coefficients are as small as possible while staying as whole numbers.
1.) ------------------------------------------------------------------------------------------------------
The unbalanced equation:
Mg + H₂ -----> MgH
Reactants: 1 magnesium, 2 hydrogen
Products: 1 magnesium, 1 hydrogen
The balanced equation:
2 Mg + H₂ ------> 2 MgH
Reactants: 2 magnesium, 2 hydrogen
Products: 2 magnesium, 2 hydrogen
2.) ------------------------------------------------------------------------------------------------------
The unbalanced equation:
K + O₂ -----> KO
Reactants: 1 potassium, 2 oxygen
Products: 1 potassium, 1 oxygen
The balanced equation:
2 K + O₂ -----> 2 KO
Reactants: 2 potassium, 2 oxygen
Products: 2 potassium, 2 oxygen
3.) ------------------------------------------------------------------------------------------------------
The unbalanced equation:
K + S -----> KS
Reactants: 1 potassium, 1 sulfur
Products: 1 potassium, 1 sulfur
This equation is already balanced with all the elements/compounds having coefficients of 1.
4.) ------------------------------------------------------------------------------------------------------
The unbalanced equation:
Ba + Br₂ -----> BaBr
Reactants: 1 barium, 2 bromine
Products: 1 barium, 1 bromine
The balanced equation:
2 Ba + Br₂ -----> 2 BaBr
Reactants: 2 barium, 2 bromine
Products: 2 barium, 2 bromine
5.) ------------------------------------------------------------------------------------------------------
The unbalanced equation:
Ca + N₂ ------> CaN
Reactants: 1 calcium, 2 nitrogen
Products: 1 calcium, 1 nitrogen
The balanced equation:
2 Ca + N₂ ------> 2 CaN
Reactants: 2 calcium, 2 nitrogen
Products: 2 calcium, 2 nitrogen
Gas and dust are the primary components of the interstellar medium. They differ in structural form, elemental composition, and the density with which each is distributed across the interstellar medium. Complete the table by placing the physical descriptions of gas and dust in the appropriate column.
Gas: Structural Forms are Atoms and small molecules whereas Density is quite Low density
Dust: Structural Forms are Clumps of atoms and large molecules wherease Density is Extremely low density
Most of the gas between stars in our galaxy and other galaxies is hydrogen and helium, which is dispersed at different densities between the stars. The gas ratios are comparable to those of the Sun
A buildup of gas and dust falls under the influence of gravity to generate stars. From the moment the first gas cloud begins to compress to the time the star is formed and begins to shine like the Sun, the process of star creation takes roughly one million years.
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Relative humidity is described as: Group of answer choices a basically unused concept when it comes to weather topics. the amount of water vapor in the air at a given temperature expressed as a percentage of the water vapor capacity of the air. the amount of water vapor in the air compared to the normal amount. the amount of moisture in the air relative to your own sensible feelings.
Correct answer:
The relative humidity is best described as the amount of water vapor in the air at a given temperature expressed as a percentage of the water vapor capacity of the air.
What is relative humidity?
The ratio of the current absolute humidity to the highest absolute humidity is known as relative humidity (which depends on the current air temperature).
Water vapor is also measured by relative humidity, which is stated as a percentage but RELATIVE to the air's temperature. In other words, it is a comparison between the amount of water vapor that is actually present in the air and the maximum amount of vapor that is possible for the air at the current temperature.
With the same quantity of absolute/specific humidity, air will have a HIGHER relative humidity if it is cooler and a LOWER relative humidity if it is warmer because warm air may contain more water vapor (moisture) than cold air. The actual amount of moisture (absolute humidity) in the air is what we "feel" outside.
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Use Table B in your Student Guide to answer the questions about ion concentrations.
A solution with a pH = 13 has approximately how many moles of OH– ions per liter?
0.1
How many moles of H+ would this same solution have per liter?
0.000000000000.1
⇒ 0.0000000000001
(Use the decimal form of your answer.)
A different solution with an H+ concentration of 1.0 × 10–4 would have a pH =
4
.
1. The amount of OH¯ present in the solution is 0.1 mol/L
2. The amount of H⁺ present in the solution is 0.0000000000001 mol/L
3. The pH of the solution with H⁺ concentration of 1×10⁻⁴ mol/L is 4
1. How to determine the amount of OH¯ in the solutionWe'll begin by obtaining the pOH of the solution
pH = 13pOH =?pH + pOH = 14
13 + pOH = 14
Collect like terms
pOH = 14 - 13
pOH = 1
Finally, we can determine the OH¯
pOH = 1OH¯ =?pOH = –Log [OH¯]
1 = –Log [OH¯]
Multiply through by –1
–1 = Log [OH¯]
Take the anti-log of –1
[OH¯] = anti-log of (–1)
[OH¯] = 0.1 mol/L
2. How to determine the amount of H⁺pH = 13H⁺ =?pH = –Log [H⁺]
13 = –Log [OH¯]
Multiply through by –1
–13 = Log [H⁺]
Take the anti-log of –13
[H⁺] = anti-log of (–13)
[H⁺] = 0.0000000000001 mol/L
3. How to determine the pHH⁺ = 1×10⁻⁴ mol/LpH =?pH = –Log [H⁺]
pH = –Log 1×10⁻⁴
pH = 4
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The body of a speech consists of a. thesis statements and introductions. b. a restatement of the thesis and statement of closure. c. specific purpose statements and internal summaries. d. main points, supporting points, and transitions.
Main points, supporting points, and transitions
The body is everything but the introduction and the conclusion. The body of a speech is made up of main points, supporting points, transitions
What is Body of Speech ?The body of a speech is the center part of the speech that discusses the main ideas and key concepts of the speech.
Main points. are the key ideas you present to enable your speech to accomplish its specific purpose.In a composition or speech, a supporting detail is a fact, description, example, quotation, anecdote, or other item of information used to back up a claim, illustrate a point, explain an idea, or otherwise support a thesis or topic sentencea transition is a sentence where the speaker summarizes what was said in one point and previews what is going to be discussed in the next point.Learn more about Body of Speech here:
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In the lab, you looked at speed-time graphs to determine the acceleration of the cart for each of the three fan speeds. what was the acceleration of the cart with low fan speed? cm/s2 what was the acceleration of the cart with medium fan speed? cm/s2 what was the acceleration of the cart with high fan speed? cm/s2
Answer:
See below.
Explanation:
Acceleration is the change in velocity over a period of time.
Let vi be the initial velocity.
Let vf be the final velocity.
t is the time it took to go from vi to vf.
Acceleration is (vf-vi)/t
If the initial velocity was 2 cm/s and the final velocity was 10 cm/s, the object would have incresed it's velocity by (10 - 2) or 8 cm/s. If iit took 10 seconds to reach vf, the acceleration would be:
(8 cm/s)/(10 s) = 0.8 cm/s^2
Which law states that the total pressure of a gas mixture is equal to the sum of the partial pressures of its individual gases?.
Dalton's law of partial pressures states that the total pressure of a gas mixture is equal to the sum of the partial pressures of its individual gases.
What is partial pressure?Partial pressure is defined as the pressure exerted by individual gas constituents that makes up a mixture of gases.
According to Dalton's law of partial pressures which states that the total pressure by a mixture of gases is equal to the sum of the partial pressures of each of the constituent gases.
This can be represented mathematically by the following:
P = P1 + P2
Where P = total pressure
P1 = partial pressure of gas 1
P2 = partial pressure of gas 2.
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Explain why increasing extracellular k reduces the net diffusion of k out of the neuron through the k leak channels
This because the concentration gradient does not favor diffusion of potassium ions through the K leak channels.
What is diffusion?Diffusion is the movement of molecules of substances from regions of high concentration to regions of low concentration.
Diffusion of ions through the cell membrane takes places through leak channels due to concentration gradient.
The diffusion of potassium ions in and out of the cell depends on the extracellular concentration of potassium ions.
When extracellular concentration of potassium ions increases, it reduces the net diffusion of K out of the neuron through the k leak channels because the concentration gradient does not favor outward movement of potassium ions.
In conclusion, the diffusion of potassium ions through K leak channels depends on concentration gradient.
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A solution contains 7.8% W/V ethanol. Express this in units of g/mL.
A solution that contains 7.8% W/V ethanol is equivalent to 0.078g/mL. Details about weights per volume can be found below.
How to convert W/V% to g/mL?Weights per volume is a unit for measuring density of a substance. It can be converted to g/mL using the following expression:
w/v% = g/100mL
According to this question, a solution contains 7.8% W/V ethanol. The equivalent of this in g/mL is as follows:
7.8% W/V = 7.8g/100mL
= 0.078g/mL
Therefore, a solution that contains 7.8% W/V ethanol is equivalent to 0.078g/mL.
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i need help asapppp
You are a marine paleontologist working on the sediments in
the Mediterranean Sea. Seventeen different locations have
been investigated. Over four months your team found and
collected material that may once have been a part of an
ancient seabed. If it was an ancient seabed, it is likely to
contain fragments of shells and other fossils. After careful
analysis, you found one chemical to be predominant in all
seventeen samples. The percentage composition of this
compound was found to be 40.00% calcium, 11.99% carbon,
and 48.01% oxygen. The molar mass of the unknown
compound is 100.09 g/mol.
1. Find the empirical and molecular formulae for the unknown
compound (substance X). What is the name of this
compound?
The molecular formula of the compound is CaCO3.
What is the molecular formula?The molecular formula is the formula of the compound that shows the number of atoms present in the molecule.
Now, we have that;
Ca - 40.00/40 C - 11.99/12 O - 48.01/16
Ca - 1 C - 1 O - 3
The empirical formula of the compound is CaCO3
Now;
[40 + 12 + 3(16)]n = 100.09
n = 100.09 /100
n = 1
Hence, the molecular formula of the compound is CaCO3.
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How does a conjugate acid differ from its conjugate base?
The conjugate acid is differ from its conjugate base as, conjugate acid is formed by strong base whereas conjugate base is formed by strong acid.
conjugate base is differ from conjugate acids by the presence of the proton. The conjugate acid is formed when proton is added to the bases whereas conjugate bases is formed when proton is released by the acids.
Example of corrugate acids are given below.
[tex]NH_{3}[/tex] → [tex]NH_{2} ^{-} +H^{+}[/tex]
In the above example [tex]NH_{2} ^{-}[/tex] is conjugate acids.
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Radiometric dating allows scientists to figure out the absolute age of an event.
A. What is a half-life?
B. Which of these four radioactive elements would you choose to date a specimen from the most recent epoch?
Half-life in geology is defined as the time it takes for a radioactive material or element to decay half its original quantity into a daughter radiogenic isotope.
From the radioactive elements listed the Carbon-14 would be most preferable for dating a specimen.
What is radiometric dating?Radiometric dating is defined as the process that is used by scientists to calculate the age of geologic materials.
From the data given in the table above, the radioactive element with the most recent half-life is carbon-14 being 5,730 years.
The uses os Carbon-14 include the following:
Used to measure the age of wood,Used to measure sources of chloride and the age of waterResearchers can use that decay as a kind of clock that allows them to peer into the past.Used in studying abnormalities of metabolism that underlie diabetes, gout, anemia, and acromegaly.The carbon-14 is preferably used for dating specimen because it is the most stable and accurately dates archaeological artifacts.
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Please help! Is there another way that 3.40x10^-19J can be imputed on a computer. I have the right answer but it is wrong.
An element emits light at a wavelength of 584 nm. What is the energy of the photon with that wavelength?
Write your answer in scientific notation with the appropriate significant figures and unit. The exponent of 10 is written with the carat (^) symbol, so 10^n.
The energy of the photon with the wavelength of 584 nm is 3.4×10¯¹⁹ J
How to determine the frequency of the photonWavelength (λ) = 584 nm = 584×10⁻⁹ mSpeed of light (v) = 3×10⁸ m/sFrequency (f) = ?f = v / λ
f = 3×10⁸ / 584×10⁻⁹
f = 5.14×10¹⁴ Hz
How to determine the energyPlanck's constant (h) = 6.626×10¯³⁴ JsFrequency (f) = 5.14×10¹⁴ HzEnergy (E) =?E = hf
E = 6.626×10¯³⁴ × 5.14×10¹⁴ Hz
E = 3.4×10¯¹⁹ J
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The addition of an inert gas has no effect on the equilibrium position of a gaseous reaction because ______. Multiple choice question. the inert gas has no effect on the equilibrium system at all since it is not involved in the reaction the partial pressures of the reaction components remain the same the reaction quotient compensates for the inert gas the total pressure of the system remain the same
Inert gas does not affect the equilibrium position:
It is because the partial pressures of the reaction components remain the same.
What is Inert Gas?
Under a given set of conditions, an inert gas is a gas that does not undergo chemical reactions.The noble gases (helium, neon, argon, krypton, xenon, and radon) were previously known as "inert gases" due to their perceived lack of involvement in any biochemical processes.Because inert gases are non-reactive, they do not affect equilibrium partial pressures and thus do not affect volume.An inert gas does not react with the reactants or products; it does not change the concentration of the products and reactants. Furthermore, because the volume is constant, the concentrations are unaffected. As a result, this does not affect equilibrium.The equilibrium position won't change if an inert gas is added. A volume change won't change the equilibrium position if the total moles of gas in the products and reactants are the same. When the volume is reduced, the process changes to create fewer moles of gas.
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For a phase change, H = 2 kJ/mol and S = 0.017 kJ/(K-mol). What are
G and the spontaneity of the phase change at 500 K?
A. G=-6.5 kJ; nonspontaneous
B. G= 10.5 kJ; spontaneous
C. G= 10.5 kJ; nonspontaneous
D. G=-6.5 kJ; spontaneous
The reaction has a change in free energy of -6.5 kJ and is spontaneous Option D.
What is a spontaneous reaction?The term spontaneous reaction refers to a reaction that occurs with n external input of energy. We know that a spontaneous reaction is one in which the value of the change in free energy is negative. If the change in the free energy is positive then the reaction is nonspontaneous.
If the value of the change in free energy is zero then it follows that the reaction has attained equilibrium.
Now;
ΔG = ΔH - TΔS
ΔH = 2 kJ/mol
T = 500 K
ΔS = 0.017 kJ/(K-mol)
When we substitute values;
ΔG = 2 kJ/mol - (500 K * 0.017 kJ/(K-mol))
ΔG = -6.5 kJ
It the follows that the reaction has a change in free energy of -6.5 kJ and is spontaneous Option D.
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A student dissolves a spoon full of table salt (sodium chloride) in a glass of water.
After the salt is completely dissolved, the major entities in the glass (other than the
water itself) are:
(select all that apply)
Sodium chloride crystals
Aqueous sodium ions
Chlorine gas
Solid sodium metal
Liquid sodium metal
Aqueous chloride ions
Answer:
Aqueous sodium ions, Aqueous chloride ions
Explanation:
Sodium chloride dissociates into Na+ and Cl- ions in water
Sodium chloride crystals may also be present in case of saturated solution
please help me with this question
From the calculation, the concentration in parts per billion is 6 ppb.
What is ppb?The term ppb refers to the concentration of a substance in parts per billion. We obtain the ppb using the formula;
Mass of solute/ Mass of solution * 10^9
Now, 1L = 1000cm^3 = 1000 g
The concertation in ppb = 6 * 10^-6 g/1000 g * 10^9
= 6 ppb
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Predict the nature of the indicated
covalent bond.
H
H
polar
H-C
H
-C-H
H
non-poiar
Answer:
Non-polar
Explanation:
Non-polar bonds occur when the electrons in a covalent bond are equally shared between the two atoms.
The indicated bond is most likely non-polar because the two atoms are identical (both carbons). In addition, these two carbons are balanced (their other bonds are identical). This means there is no reason for the electrons in the bond to be pulled in any particular direction.
what is saturated solution?12
Answer:
A solution in which the maximum amount of solvent has been dissolved
Explanation:
For example, 36g of salt in 100g of water.
You want to control the temperature of an enzyme-controlled reaction that is taking place inside a flask. What is the most effective way to keep the reaction at a controlled and steady temperature?
Use of thermostat is the most effective way to keep the reaction at a control temperature.
What is the most effective way to keep the reaction in control?The reaction takes place in a thermostat is the most effective way to keep the reaction at a controlled and steady temperature because thermostat regulates the temperature of that solution which is placed in it. If the temperature goes higher then the extra heat is released from the system.
So we can conclude that use of thermostat is the most effective way to keep the reaction at a control temperature.
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