The vessel will not explode since the new gas pressure is less than 3 atm.
What will be the pressure when the temperature of a given volume of nitrogen gas is heated?The pressure when the temperature of a given volume of nitrogen gas is heated is calculated using the formula given below:
P₁/T₁ = P₂/T₂where;
P₁ = initial pressureT₁ = initial temperatureP₂= final pressureT₂ = final temperatureSolving for P₂
P₂ = P₁ * T₂ / T₁
P₂ = 0.836 * (680 + 273) / (20 + 273)
P₂ = 2.72 atm
The new pressure is less than 3 atm.
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At a certain temperature, the solubility of aluminum hydroxide is (8.70x10^-13) M. What is the Ksp at this temperature?
The solubility product (Ksp) at the given temperature is 2.27×10⁻²⁴
How do I determine the solubility product (Ksp)?We'll begin by writing the dissociation equation of aluminum hydroxide, Al(OH)₃. This is shown below:
Al(OH)₃(aq) <==> Al³⁺(aq) + 3OH⁻(aq)
Finally, we shall determine the solubility product (Ksp). This is illustarted below:
Concentration of Al(OH)₃ = 8.70×10⁻¹³ MConcentration of Al³⁺ = 8.70×10⁻¹³ MConcentration of OH⁻ = 3 × 8.70×10⁻¹³ = 2.61×10⁻¹² MSolubility product (Ksp) =?Ksp = [Al³⁺] × [OH⁻]
Ksp = 8.70×10⁻¹³ × 2.61×10⁻¹²
Ksp = 2.27×10⁻²⁴
Thus, we can coonclude that the solubility product (Ksp) is 2.27×10⁻²⁴
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How many atoms are there in 65.0 grams of methane, CH4?
Methane (CH4) is a hydrocarbon that is mostly found in natural gas and has a molecular weight of 4.051747moles per 65.0 grams.
What effects has methane on people?Methane concentrations above a certain threshold can affect how much oxygen is breathed in. This can include headaches, face flushing, memory loss, vision issues, slurred speech, mood swings, nausea, and vomiting. Serious cases could result in altered breathing and heart rate, balance issues, numbness, and coma.
Why is methane bad? What is it?The gas methane (CH4) is colorless, odorless, and very combustible. Carbon and hydrogen are its main ingredients. According to us Environmental Protection Agency, it is also a powerful greenhouse gas, meaning means it influences climate change by causing more warming.
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Choose the colder temperature.
A) -30°F
B) 20°F
[tex]-6.66^{0} C[/tex][tex]-30.4^{0} C[/tex]Between the two options, the option A shows the colder temperature, that is [tex]-30^{o}[/tex] F.
How to determine the colder temperature?
Both Fahrenheit and Celsius employ different temperatures as the water's freezing and boiling points, as well as differing sizes for their degrees. While water freezes at zero degrees Celsius and boils at one hundred degrees C, it does so at 32 degrees Fahrenheit and two hundred and twenty degrees F, respectively. You can see that although Fahrenheit has 180 ° between the freezing and boiling extremes, Celsius has 100 degrees. The difference between one degree Celsius and one degree Fahrenheit is 1.8.
On converting [tex]-30^{o}[/tex] F to Celsius we get, [tex]-30.4^{0} C[/tex]
and on converting [tex]20^{o} F[/tex] to Celsius, we get, [tex]-6.66^{0} C[/tex]
Hence, we can say [tex]-30.4^{0} C[/tex] is colder temperature than [tex]-6.66^{0} C[/tex].
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In the SI system of units [International System of Units], the mole is one of seven base units. It is frequently used in chemical calculations. However, a mole of something is just a particular quantity of it. It is not a unit of measure in the way that meters, seconds, and kilograms are. Calculations performed with the number of moles of a substance could also be performed with the number of particles of a substance. Based on this information, do you think that the mole should be considered a base unit in the SI system? Explain why or why not.
A Mole should not be considered a base unit in the SI system.
SI system is a metric system which is also known as the International system of units. Most of the measurements across the globe is measured by SI system. SI units are used in nearly every part of the globe, such as science, technology, mathematics and many more. The system includes coherent units known as derived units.
A Mole is not considered as any property of the units and also it is not a base unit.Moles can be considered for chemical and physical comparison.A Mole of a substance can indicate the number of particles of that substance.Learn more about SI system from the link given below.
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Sodium combines with water to produce sodium hydroxide and hydrogen gas.
Which word equation represents this
violent reaction?
O sodium hydroxide + water _, sodium + hydrogen
O sodium + water + - sodium hydroxide + hydrogen
O sodium + hydrogen - sodium hydroxide + water
• sodium + sodium hydroxide - water + hydrogen
sodium + water + - sodium hydroxide + hydrogen is the word equation to produce sodium hydroxide and hydrogen gas.
Option B is correct.
Is the chemical change that occurs when water and sodium combine to generate sodium hydroxide and hydrogen gas?A colorless solution of sodium hydroxide (NaOH) and hydrogen gas is created when sodium metal interacts quickly with water (H2).It is an exothermic process.
What happens chemically when water and sodium hydroxide are combined?Na+ and OH- ions result from the reaction NaOH and H2O. Heat will be released because the process is exothermic. Since sodium hydroxide is regarded as a strong base, it can completely and entirely dissociate in aqueous solution.
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Answer: calcium
Explanation:
Fats can be broken apart in a process called saponification. In which solution will this process most likely occur?
an aqueous solution of a strong acid at a temperature near 0°C.
an aqueous solution of a strong base at a temperature near 100°C
an aqueous solution of a mild acid at room temperature
an ether solution that contains carbon tetrachloride at room temperature
Fats can be broken apart in a process called saponification, which most likely will occur in an aqueous solution of a strong base at a temperature near 100°C (Option B).
What is the chemical process of saponification?The chemical process of saponification refers to the hydration capable of breaking down different types of ester chemical bonds between the subunits of a lipid molecule, which may be composed of fatty acid chains and or a glycerol backbone.
The chemical process of saponification is enhanced by the presence of a strong base and high temperature capable of denaturing the chemical bonds of the lipid molecule.
Therefore, with this data, we can see that the chemical process of saponification is most likely to occur in presence of a strong base that breaks the ester bonds of the lipid molecules, which are generally composed of a glycerol backbone.
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2 H + 3 H -----> 2 He + 1 n
1 1 4 0
Explain in 1-2 sentences: Is the above equation an example of fission or fusion? How do you know? Give at least 2 reasons why.
The given reaction is an example of nuclear fusion.
This is because two lighter hydrogen atoms fuse to give a heavier helium atom. There is also an increase in the atomic number of the product.
What are nuclear fission and nuclear fusion reactions?Nuclear fission reactions are reactions in which the nucleus of large atoms are split into nucleus of two or more smaller atoms.
For example, uranium atoms split into krypton and barium.
Nuclear fusion reactions involve the nucleus of two or more smaller atoms combining to give an atom of a larger nucleus.
For example, hydrogen atoms fuse to give a helium atom.
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Which is more soluble in water, Calcium Carbonate or Calcium Hydroxide, and why?
Answer:
Calcium Hydroxide is more soluble in water
Explanation:
Calcium Hydroxide is more soluble in water as all group 2 carbonates are not very soluble while Group 2 hydroxides are moderately soluble.
Magnesium acts similar to sodium when forming an ionic bond in terms of losing or gaining electrons.
What is the most likely way in which an atom of magnesium (Mg) will satisfy the octet rule when it forms bonds?
The most likely way in which an atom of magnesium (Mg) will satisfy the octet rule when it forms bonds is by losing two electrons.
What is the octet rule?The octet rule is described as a chemical rule of thumb that reflects the theory that main-group elements tend to bond in such a way that each atom has eight electrons in its valence shell, giving it the same electronic configuration as a noble gas.
The octet rule is held responsible for the relative inertness of the noble gases and the chemical behavior of certain other elements.
Magnesium (Mg) will satisfy the octet rule when it forms bonds is by losing two electrons.
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Answer:
by losing two electrons
Explanation:
I got it right on edge 2023
good luck
Liquid octane (CH 3 (CH 2 ) 6 CH 3 ) will react with gaseous oxygen (O2) to produce gaseous carbon dioxide (CO2) and gaseous water (H2O) Suppose 8.0 g of is with 39.5 of oxygenCalculate the minimum mass of octane that could be left over by the chemical reaction. Be sure your answer has the correct number of significant digits
Answer:
Octane can be written as C8H18.
The balanced equation for combustion of octane is:
2C8H18 + 25 O2 ==> 16CO2 + 18H2O
Finding the limiting reactant:
10.g C8H18 x 1 mol C8H18 / 118 g = 0.0847 moles (÷2->0.042)
61.2 g O2 x 1 mol O2 / 32 g = 1.91 moles (÷25->0.077)
C8H18 is the limiting reactant and will dictate the maximum amount of H2O that can form.
Maximum H2O formed:
0.0847 moles C8H18 x 18 moles H2O / 2 moles C8H18 x 18 g H2O/mol = 14 g H2O formed (2 sig.figs.)
Explanation:
hope it can help you !
The gas tank of car hold 22.3 gallons.If the density of gasoline is 0.8206g/mL,determine the massin kilograms and pounds of the fuelin a full truck
Density = mass/Volume or D = m/V
Given: V = 22.3 gal
D = 0.8206 g/mL
1) Rearrange the equation to solve for m
2) Find conversion factor(s) and convert V from gal to mL (by dimensional analysis) so the units cancel
3) Solve for m in g
4) Find conversion factor(s) and convert m from g → lbs
1) D = m/V rearranges to m = D ∗ V
2) 1 gal = 3.785 L and 1 L = 1000 mL; 22.3 gal ∗ 3.785 L/1 gal ∗ 1000 mL/1 L = 84 406 mL
3) m = 0.8206 g/mL ∗ 84 406 mL = 69 260 g
4) 1 lb = 453.6 g; 69 260 g ∗ 1 lb/453.6 g = 153 lbs
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What is the mass of an object that has a density of 2.2 g/ml and a volume of 6.0 mL
7. Pemican is a concentrated food traditionally used by Fir:
What specific kind of potential energy does pemican have
of dietary calories?
A. kinetic energy
B. elastic potential energy
C. chemical potential energy
D. gravitational potential energy
The specific kind of potential energy does pemican have of dietary calories is chemical potential energy.
What is potential energy?
potential energy, stored in energy that depends upon to the relative position of the various parts of a system. A spring has more potential energy when it is the compressed or stretched.
Sol-Chemical energy is simply energy that is stored to in compounds or elementary are specifically in the atomic bonds that connect atoms and the molecules. In food, it is a form of potential energy id because it's stores away.
The type of potential energy is that exists within chemical bonds, and it is released when of those bonds are broken, is called chemical energy. Chemical energy is the responsible for providing is living cells with energy from food. The release of energy occurs in when the molecular bonds are within food molecules are broken.
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joules to warm 59.5 mL of water ( density=1.00g/mL ) from 26.5 ∘C to 100 ∘C and vaporize it at 100 ∘C
Knowing the heat capacity of the water, we know that the heat absorbed is 1.83 * 10^4 J.
What is the heat of the water?We know that water can be able to absorb heat when it is heated and the heat that is absorbed can be able to change the state of the water. We are now going to see how we can be able to obtain the heat that is absorbed by the water.
Then;
H = mcdT
H = heat absorbed
m = mass of the water
c = heat capacity of water
dT = temperature change
Given that mass of the water = 59.5 g we can write;
H = 59.5 g * 4.18 * (100 ∘C - 26.5 ∘C)
H = 1.83 * 10^4 J
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Is it polar or non polar ?
The area of human activity that consumes the most energy is____.
a. transportation
b. building construction and operation
c. industrial manufacturing
d. heavy engineering and infrastructure
The area of human activity that consumes the most energy is building construction and operation. Option B.
Humans impact the physical environment in many ways including overpopulation pollution burning fossil fuels and deforestation. Such changes are causing climate change soil erosion declining air quality and undrinkable water. Human geography includes the study of all human activities and their effects on the natural environment.
The impact of early human societies on the natural environment was minimal due to the presence of a small number of nomads, mainly through hunting, fishing, and gathering. The human activity system is a fictitious system that represents goal-oriented human activity. These systems are fictitious in the sense that they are intelligent constructs and do not describe actual real-world activities.
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2
A chamber contains equal molar amounts of H₂, N₂, and O₂. If the
total chamber pressure is 2.00 atm, then the partial pressure of h2 is
The mole fraction must be known in order to determine the partial pressure of h2.
What is molar fraction?
The amount of a component, ni, expressed in moles, divided by the sum of all the components, ntot, likewise stated in moles, is known as the mole fraction or molar fraction (xi or I).
Below is an example of this phrase:
xi=ni/ntot
What is partial pressure?
If a container is filled with multiple gases, each gas will exert pressure, which is known as partial pressure. Its partial pressure is the pressure of any gas contained within the container.
Using this mole fraction formula:
=Xa/Xa+Xb+Xc
=XH2/XH2+XN2+Xo2
=1/3
=1/3×2=2/3
The partial pressure of h2 is 2/3
Therefore, the partial pressure of h2 is 2/3.
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What is the balanced equation for this reaction, which takes place in a basic solution?
Cr(OH)3(s) + ClO3–(aq) → CrO42 (aq) + Cl–(aq)
Cr(OH)3(s) + 2ClO3–(aq) + 6OH–(aq) → 3CrO42–(aq) + 2Cl–(aq) + 2H2O(l)
Cr(OH)3(s) + 2ClO3–(aq) + 4OH–(aq) → 2CrO42–(aq) + Cl–(aq) + 3H2O(l)
2Cr(OH)3(s) + ClO3–(aq) + 4OH–(aq) → 2CrO42–(aq) + Cl–(aq) + 5H2O(l)
2Cr(OH)3(s) + 2ClO3–(aq) + 6OH–(aq) → 2CrO42–(aq) + 2Cl–(aq) + 7H2O(l)
The balanced equation for the redox reaction, which takes place in a basic solution is:
2 Cr(OH)₃ + ClO₃⁻ (aq) + 4 OH⁻ → 2 CrO₄²⁻ (aq) + Cl⁻ (aq) + 5 H₂O; option CWhat is the balanced equation for the redox reaction?A balanced equation for a redox reaction is one in which the electrons transferred are balanced and the atoms involved in the reaction are also balanced.
To balance redox reactions in a basic solution, OH⁻ ions and H₂O are placed on appropriate sides of the reaction.
Considering the given reaction:
Cr(OH)₃ + ClO₃⁻ (aq) → CrO₄²⁻ (aq) + Cl⁻ (aq):
The balanced equation will be:
2 Cr(OH)₃ + ClO₃⁻ (aq) + 4 OH⁻ → 2 CrO₄²⁻ (aq) + Cl⁻ (aq) + 5 H₂O
The electrons transferred and the atoms involved are balanced.
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how much will the temperature of 5.00g of silver decrease if it loses 982 j of heat ?
The temperature of the silver will decrease by -828.7 °C
if it loses 982 J of heat energy
How do I determine the temperature change?From calorimetry, we understood that heat released or lost is given by:
Q = MCΔT
Where
Q is heatM is the mass C is the specific heat capacityΔT is the temperature change
With the above formula, we can determine the temperature change of the silver. This is illustrated below
Mass of silver (M) = 5.00 gHeat lost (Q) = -982 JSpecific heat capacity of silver (C) = 0.237 J/gºC Temperature change (ΔT) = 124Q = MCΔT
-982 = 5 × 0.237 × ΔT
-982 = 1.185 × ΔT
Divide both side by 1.185
ΔT = -982 / 1.185
ΔT = -828.7 °C
Thus, the temperature will decrease by -828.7 °C
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How much NaOH (in moles) must be added to 1 L of a buffer solution that is 1.8 M in acetic acid and 1.2 M in sodium acetate to result in a buffer solution of ph 5.22? Assume volume to remain constant.
Is the structure of C4H6 rigid? (i.e. is it unable to rotate/move?) If not, which part of the molecule is not rigid? Try to describe the shape of this molecule.
The molecular structure of C4H6 rigid is Not rigid.
The Schrödinger equation, a quantum mechanical equation for the motion of electrons in the field of nuclei, can theoretically be used to identify the molecule structure. The bond lengths and bond angles in a molecular structure are those where the molecular energy is lowest. The numerical solution of the Schrödinger equation to determine structures has developed into a highly developed technique requiring the use of computers and supercomputers.
Either either neutron diffraction or microwave vibration-rotation spectra are used to determine the nuclear locations within a molecule. X-ray diffraction investigations can be used to analyse the electron cloud that surrounds a molecule's nucleus.
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Please Help Me I don't Understand It.
Answer:
Javier's model is better, as the ball-and-stick model shows distinct differences in bond, whereas Carlos' model just shows them as differently colored circles.
Identify what element is reduced and what element is oxidized in the following reaction. Pb + 2l2 Pbl4
Lead (Pb )is oxidised and Iodine(I) reduction in the given reaction.
What is oxidation and reduction of elements?
An increase in an element's oxidation state or the loss of electrons is referred to as oxidation.
Gaining electrons or lowering an atom's oxidation state are both considered to be reductions in the context of chemical reactions.
Pb + 2l2 gives Pbl4
The oxidation number of lead in non bonded form is zero. In PbI4 oxidation number of lead is + 4.There is an increase in the oxidation number. The oxidation number of iodine in free state is zero. Whereas in P I4 oxidation number iodine is -1, there is a decrease in oxidation number.
Hence, lead (Pb )is oxidised and iodine(I) is reduced in the given reaction.
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In the given balanced redox reaction, Pb is oxidised and I is reduced.
What are redox reactions?
A redox reaction is one in which electrons are transferred between different chemical species (the atoms, ions, or molecules involved in the reaction).Some species go through oxidation, which is the loss of electrons, while others go through reduction, which is the gain of electrons, during a redox process.From the given balanced redox reaction
Pb + 2 Cl₂ ⇄ PbCl₄
We can identify and write balanced half-reactions describing the oxidation and reduction that happen in this reaction.
Oxidation: Pb → Pb⁴⁺ + 4 e⁻
Reduction: 2 I₂ + 4 e⁻ → 4 I⁻
From the half reactions it is determined that Pb is oxidized and its oxidation number increases from 0 to 4+ while I₂ is reduced and its oxidation number decreases from 0 to 1-.
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what indicates the follwing percentage of the natural occurance of an isotope ofc an element
Natural abundance indicates the following percentage of the natural occurrence of an isotope of an element on the planet.
Natural abundance is defined as the relative amount of the isotopes of an element which occurs in nature. It is also known as geonormal abundance.
Natural abundance is also represented as percentage value.Relative atomic mass can be determined by using the natural abundance value of an isotope of an element.Relative atomic masses of any isotope can be easily determined if we know the atomic masses and their respective abundances.The formula to calculate the natural abundance of an element with two isotopes is given as :
x + (1 - x) = 1
Where,
x represents the fractional value of isotope-1 and 1 - x represents the fractional value of isotope-2.
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PLEASE HELP
Can someone explain this?
Commercial concentrated nitric acid, HOg, is 15.8 M. What volume of concentrated HNO; would be required
to prepare 842 mL of 7.77 M HNO}?
Be sure to enter a unit with your answer.
The volume of the solution is obtained as 414 mL.
What is the required volume?Often times, we want to reduce the concentration of a solution and the way that we can be able to do that is by the process of dilution. When we say dilution what it means is that we are going to increase the volume of the solution.
In this case;
C1 = initial concentration
V1 = initial volume'
C2 = final concentration
V2 = final volume
Then;
C1V1 = C2V2
V1 = C2V2/C1
= 7.77 M * 842 mL/ 15.8 M
= 414 mL
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if some filtrate splattered out of the beaker while it was heated how would this affect the measured results
Answer:
it will be all water and it needs to cool of
Compare the properties of solids, liquids, and gases in terms of the kinetic molecular theory.
If an atom has 5 valance electrons, it will need to
gain 3
gain 8
gain 0
lose 4
electron(s) in order to become stable?
Answer: gain 3
Explanation:
elements want to have a total of 8 valence electrons to become stable like the noble gases! Hope this Helps.
Hydrogen gas is collected over
water at a total pressure of 1.00
atm. The volume of hydrogen
collected is 35.0 mL at 27.0°C. How
many grams of hydrogen gas was
collected?
Answer:21.0 mL
shorten math
Balance the equation HC2H3O2(aq)+Ca(OH)2(aq)→
The reaction of acetic acid and calcium hydroxide is an example for double displacement reaction. The balanced equation can be written as,
2 HC2H3O2 (aq) + Ca(OH)2 (aq) ----------> Ca(C2H3O2)2 (aq) + H2O (l)
What is double displacement reaction?
The double displacement reaction is a type of reaction in which the cations and anions of the reacting species exchange with each other to form two new compounds.
In the reaction of acetic acid and calcium hydroxide the cationic part of calcium hydroxide reacts with anionic part of acetic acid to give calcium acetate and the anionic part of calcium hydroxide reacts with cationic part of acetic acid to give water. This type of reaction between acetic acid and calcium hydroxide is called double displacement reaction.
Therefore, the balanced equation for double displacement reaction of acetic acid and calcium hydroxide can be written as,
2 HC2H3O2 (Aq) + Ca(OH)2 (aq) ---------> Ca(C2H3O2)2 (aq) + H2O (l)
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