Answer:
reactants and products
Explanation:
According to law of conservation of mass
In a chemical reaction
Mass is neither created nor endorsedSo by balancing equation we fulfil this law
Answer:
oxidation-reduction reaction, also called redox reaction, any chemical reaction in which the oxidation number of a participating chemical species changes. The term covers a large and diverse body of processes.
• An alkane with the formula C5H12 undergoes chlorination to give only one product with the formula C5H11Cl. What is the structure of this alkane? •
Answer:
When an alkane undergoes a halogenation reaction, the majority of the products will add the halogen to the most substituted and most stable carbon. In this case, this would likely be the third carbon (middle).
Key:
Leftmost molecule = C₅H₁₂
Rightmost molecule = C₅H₁₁Cl
*Not pictured = HCl (another product)
Write an equation for the neutralization of lemon juice with baking soda. Your equation should show a proton transfer to form carbonic acid and a salt.
The equation of the neutralization reaction is:
HOC(CO₂H)(CH₂CO₂H)₂ + Na₂CO₃ ----> HOC(CO₂Na)(CH₂CO₂Na)₂ + H₂O
What is the acid in lemon juice?The main acid in lemon juice is citric acid.
Citric acid is a tricarboxylic acid and will react with baking soda to form a salt and water.
The equation of the neutralization reaction is shown below:
HOC(CO₂H)(CH₂CO₂H)₂ + Na₂CO₃ ----> HOC(CO₂Na)(CH₂CO₂Na)₂ + H₂O
In conclusion, the neutralization of citric acid in lemon juice produces a salt and water.
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Calculate the percent yield of a reaction that produced 0.350 mol HCI if the theoretical yield was 15.36 g
The percent yield of the reaction that produced 0.350 mol HCI is 83.17%
How to determine the actual yield (in grams)Mole of HCl = 0.350 moleMolar mass of HCl = 36.5 g/molActual yield =?Actual yield = 0.35 × 36.5
Actual yield = 12.775 g
How to determine the percentage yield Actual yield of HCl = 12.775 gTheoretical yield of HCl = 15.36 gPercentage yield =?Percentage yield = (Actual / Theoretical) × 100
Percentage yield = (12.775 / 15.36) ×100
Percentage yield = 83.17%
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In this activity, you are tasked with designing an airbag for a company that creates airbags for automobiles. You must design the driver’s front airbag for a specific car model so it will protect the driver as effectively as possible. For this car, the airbag must have a volume of 58 liters when fully inflated. To provide an adequate cushion for the driver’s head, the air pressure inside the airbag should be 4.4 psi. This pressure value is in addition to the normal atmospheric pressure of 14.7 psi, giving a total absolute pressure of 19.1 psi, which equals 1.30 atmospheres.
The airbag is designed to produce the volume of nitrogen gas required to fill up the airbag.
What is the function of an airbag?An airbag is a bag which is designed to self-inflate and serve as a cushion for the head and neck of a driver to prevent injuries when an impact occurs head-on on the car.
The gas that inflates the airbag is nitrogen which is produced from sodium azide according to equation below:
2NaN₃ → 2Na + 3N₂In conclusion, the design of the airbag is such that the correct amount of sodium azide is present to produce the volume of nitrogen required to fill up the airbag.
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4.50 moles of glucose in 3.50 L of a glucose solution
Answer:
Molarity = 1.28
Explanation:
[tex]m= n/v[/tex]
M = molar concentration
n = moles of solute
v = liters of solution
Molarity = moles of solute / litres of solution.
]
reference - https://www.wikihow.com
Why is scientific notation used?
to round numbers to the nearest whole number
to promote reproducibility of data
to increase the validity of data
to express very large or very small numbers
The correct option is (d) To express very large or very small number.
What is the Scientific Notation?
Scientific notation is a way to present numbers that are too large or too small to be easily written in decimal form. The three components of scientific notation are coefficient, base and exponent. The proper format to write a scientific notation is a x 10^b, where a is a number or decimal number and b is the power of 10 to make scientific notation equivalent to original number. When a number between 1 and 10 is multiplied by a power of 10 then the number is expressed in scientific notation. For example, 10000000 can be written as 10⁷, which is the scientific notation and the exponent is positive here. Similarly, for the negative exponent 0.000001 can be can be represented as 10-⁷. Hence, the scientific notation is used to express very large or very small numbers.
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1. A 4.0-g sample of glass was heated from 274K to 314 K. a temperature increase of 40 K, and was
found to have absorbed 32J of energy as heat.
a. What is the specific heat of this type of glass?
b. How much energy will the same glass sample gain when it is heated from 314 K to 344 K?
Answer:
See below
Explanation:
Q = m c T c = specific heat T = temp change Q = heat joules
32 = 4 c 40 c = .2 J/g-C
314 to 344 k is a change of 30 K
Q = m c T
= 4 * .2 * 30 = 24 Joules
Answer:
(a) 0.2 J/g°K
(b) 24 J
Explanation:
(a)
To find the specific heat capacity, you need to use the following equation:
Q = mcΔT
In this formula,
-----> Q = heat energy (J)
-----> m = mass (g)
-----> c = specific heat capacity (J/g°K)
-----> ΔT = change in temperature (K)
You can plug the given values into the equations and simplify to find the missing value.
Q = 32 J c = ? J/g°K
m = 4.0 g ΔT = 40 K
Q = mcΔT <----- Equation
32 J = (4.0 g) x c x (40 K) <----- Insert variables
32 J = (160) x c <----- Multiply 4.0 and 40
0.2 = c <----- Divide both sides by 160
(b)
To find the energy of the same sample, you can use the same equation. This time, you know the specific heat capacity, have a different change in temperature, and are solving for energy (Q).
Q = ? J c = 0.2 J/g°K
m = 4.0 g ΔT = 344 K - 314 K = 30 K
Q = mcΔT <----- Given equation
Q = (4.0 g)(0.2 J/g°K)(30 K) <----- Insert values
Q = 24 <----- Multiply
I need help with my work
By the mean value theorem, the function y = sin x² on the interval [0, π/4] has this guaranteed number: x ≈ 0.460.
How to find a number that guarantees the mean value theorem
According to the mean value theorem, a function that is differentiable at an interval [a, b] has a number c within the interval such that:
f'(c) = [f(b) - f(a)]/(b - a) (1)
The first derivative of the function is f'(x) = 2 · x · cos x² and by the mean value theorem we know that:
2 · c · cos c² = [sin (π/4)²- sin 0²]/(π/4 - 0)
2 · c · cos c² = [- √2 / 2]/(π /4)
2 · c · cos c² ≈ 0.900
This equation cannot be solved analytically. By the resource of a graphing tool we found the following solution within the interval: c ≈ 0.460.
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liquid octane(CH3)(CH2)6CH3) reacts with gaseous oxygen gas(O2) to produce gaseous carbon dioxide(CO2) and gaseous water(H2O). If 5.18 g of carbon dioxide is produced from the reaction of 3.43 g of octane and 19.1 g of oxygen gas, calculate the percent yield of carbon dioxide. Round your answer to 3 significant figures.
The percent yield of carbon dioxide will be 49.0 %.
Percent yieldFirst, let's look at the equation of the reaction:
[tex]2C_8H_1_8 + 25O_2 -- > 16CO_2 + 18H_2O[/tex]
The mole ratio of octane to oxygen is 2:25.
Mole of 3.43 g octane = 3.43/114.23 = 0.03 mol
Mole of 19.1 g oxygen = 19.1/32 = 0.60 mol
Thus, octane is limiting.
Mole ratio of octane to carbon dioxide = 2:16.
Equivalent mole of carbon dioxide = 0.03 x 8 = 0.24 mol
Mass of 0.24 mol carbon dioxide = 0.24 x 44.01 = 10.5624 grams
Percent yield of carbon dioxide = 5.18/10.5624 = 49.0 %
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How many molecules of zinc oxide are there in a 2 kg sample?
There are 1.48 × 10²⁵ molecules of zinc oxide in a 2 kg sample. Details about number of molecules can be found below.
How to calculate number of molecules?The number of molecules of a substance can be calculated by multiplying the number of moles of the substance by Avogadro's number.
According to this question, there are 2000g of ZnO in a sample. Zinc oxide has a molar mass of 81.38 g/mol.
no of moles = 2000g ÷ 81.38g/mol
no of moles = 24.57mol
number of molecules = 24.57 × 6.02 × 10²³
number of molecules = 147.95 × 10²³
Therefore, there are 1.48 × 10²⁵ molecules of zinc oxide in a 2 kg sample.
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How many moles of chlorine gas at 120. °C
and 33.3 atm would occupy a vessel of 11.5
L?
Answer:
11.9 moles Cl₂
Explanation:
To find the number of moles, you need to use the Ideal Gas Law. The equation looks like this:
PV = nRT
In this equation,
-----> P = pressure (atm)
-----> V = volume (L)
-----> n = moles
-----> R = constant (0.0821 L*atm/mol*K)
-----> T = temperature (K)
Before you can plug the given values into the equation, you first need to convert Celsius to Kelvin.
P = 33.3 atm R = 0.0821 L*atm/mol*K
V = 11.5 L T = 120. °C + 273.15 = 393.15 K
n = ? moles
PV = nRT
(33.3 atm)(11.5 L) = n(0.0821 L*atm/mol*K)(393.15 K)
382.95 = n(0.0821 L*atm/mol*K)(393.15 K)
382.95 = (32.2776)n
11.9 = n
When the soil is saturated in a gently sloping area, any additional rainfall in the area will most likely
When the soil is saturated in a gently sloping area, any additional rainfall in the area will most likely become surface run off.
What is super saturation?
Super saturation occurs with a chemical solution when the concentration of a solute exceeds the concentration specified by the value equilibrium solubility.
Additional water into the soil will cause the soil to be super saturated and eventually runs off due to the steepness of the area.
Thus, when the soil is saturated in a gently sloping area, any additional rainfall in the area will most likely become surface run off.
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Gelatin is a solid that can strengthen protein networks. How would yogurt that contains gelatin be different from yogurt that does not contain gelatin? Explain your answer.
Ice cream that contains gelatin will have a thicker consistency than on that does not contain gelatin.
What is gelatin?Gelatin is a proteoglycan which is made from boiling tendons.
Gelatin is used as a thickening agent.
Therefore Ice cream that contains gelatin will have a thicker consistency than on that does not contain gelatin.
In conclusion, gelatin is used to thicken foods.
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will mark brilliant pls help question is above
Answer:
a.) The garden plants provide energy to all the other organisms. While not every organism consumes garden plants directly, every organism's food lineage can be traced to garden plants. For instance, while ground beetles do not directly consume garden plants, they do eat snails, and snails eat garden plants.
b.) The slug population might increase is the aphid population decreased because there would be less competition for food resources. Both populations consume garden plants, and there is only a finite number of garden plants. Therefore, there is a limit that each population can consume. If there were less aphids eating the garden plants, there would be more left for the slugs. Less starving slugs would lead to greater reproduction and thus a higher slug population.
How is the kinetic energy of the particles of a substance affected during a phase change?
O Kinetic energy increases during exothermic changes and decreases during endothermic changes.
O Kinetic energy decreases during exothermic changes and increases during endothermic changes.
O Kinetic energy does not change, but the potential energy does.
O Kinetic energy changes in the opposite way that the potential energy changes.
Answer:
O Kinetic energy does not change, but the potential energy does
Calculate the pOH for the following:
1. [H+] = 1 x 10-12 M
2. [OH-] = 1 x 10-6 M
3. [H+] = 1 x 10-1 M
4. [H+] = 1 x 10-4 M
5. [OH-] = 1 x 10-7 M
The pOH refers to the negative logarithm of the hydroxide concentration.
What is the pOH?The term pOH refers to the negative logarithm of the hydroxide concentration. Now we know that there is a relation that states that;
[H+] [OH-] = 1 * 10^-14
We shall now apply this relation in each case as follows;
[OH-] = 1 * 10^-14/1 x 10-12
[OH-] = 1 * 10^-2
pOH = 2
2. pOH = -log( 1 x 10-6 M) = 6
3. [OH-] = 1 * 10^-14/ 1 x 10-1
[OH-] = 1 * 10^-13
pOH = 13
4. [OH-] = 1 * 10^-14/ 1 x 10-4
[OH-] = 1 * 10^-10
pOH = 10
5. pOH = -log( 1 x 10-7) = 7
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an analyst prepared a sucrose solution by weighing 1kg of water and add 1.5kg sucrose. estimate the concentration of the resultant solution in degree brix
The concentration of the solution is 60 degrees Brix.
What is degree Brix?Degrees Brix is the sugar content of an aqueous solution. One degree Brix is 1 gram of sucrose in 100 grams of solution and represents the strength of the solution a as percentage by mass.
Mass percent refers to the percentage of solute present in the solution.
The concentration of the substance can be expressed in mass percent.
we have to first calculate mass percent.
So, we can write,
Mass percent = mass of solute / mass of solution x 100.
Mass of solution = mass of solute + solvent.
Here, sucrose is the solute and the water is the solvent.
The mass of the solute is 1.5Kg and the mass of the solvent is 1Kg.
Mass of solution = 1.5 + 1 = 2.5 Kg.
Mass percent = 1.5/2.5x100
Mass percent is 60%.
Here, 1% = 1 degree brix.
So here, 60% = 60 degree brix.
Hence, the concentration of the solution is 60 degree brix.
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Identify the Brønsted–Lowry acid and the Brønsted–Lowry
base on the left side of each of the following equations, and
also identify the conjugate acid and conjugate base of each
on the right side:
HCOOH(aq) + PO43-(aq) gives HCOO-(aq) + HPO42-(aq)
The following applies to the above equation:
Brønsted–Lowry acid - HCOOHBrønsted–Lowry base - PO43-Conjugate acid - HPO42-Conjugate base - HCOO-What is Bronsted-Lowry acid and base?Brønsted-Lowry acid is the any chemical species that acts as a donor of protons while Brønsted-Lowry base is any chemical species that acts as a proton acceptor.
In the following equation: HCOOH(aq) + PO43-(aq) = HCOO-(aq) + HPO42-(aq)
HCOOH is the proton (H+) donor, hence, is the Brønsted-Lowry acidPO43- is the donor acceptor, hence, is the Brønsted-Lowry baseHCOO- is the conjugate base that forms from the acidHPO42- is the conjugate acid that forms from the baseLearn more about Brønsted-Lowry acid and base at: https://brainly.com/question/15885173
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How do you separate Sand Potassium Nitrate and Champhor
Identify the chirality center (sometimes called chiral atom) in each molecule. If the molecule does not contain a chirality center, select none.
The only chiral center in the molecule is carbon 4 because is attached to four different atoms or groups.
What is a chiral center?The term chiral center refers to a carbon atom that is attached to four different atoms or groups. This kind of carbon atom is able to rotate the direction of plane polarized light.
We can see from the structure of the molecule that the only chiral center in the molecule is carbon 4 because is attached to four different atoms or groups.
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Which sample contains the largest number of oxygen atoms? Select one: a. 8.0 g of carbon dioxide b. 8.0 g of potassium chlorate c. 8.0 g of calcium perchlorate d. 8.0 g of sodium hydroxide
The sample with the largest number of oxygen atoms will be calcium perchlorate.
Number of atoms in a compoundSince we are not looking at the number of moles, the mass of the compounds has no bearing on the number of atoms of oxygen.
The chemical formula for carbon dioxide is [tex]CO_2[/tex]. Thus, it has 2 atoms of oxygen.The chemical formula for potassium chlorate is [tex]KClO_3[/tex]. Thus, it has 3 oxygen atoms.The chemical formula for calcium perchlorate is [tex]Ca(ClO_4)_2[/tex]. Thus, it has 8 atoms of oxygen.The chemical formula for sodium hydroxide is NaOH. Thus, it has 1 atom of oxygen.Therefore, the compound with the largest number of oxygen atoms is calcium perchlorate.
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How is the rate of a reflection affected when the temperature increases
The rate of a reflection decreases when the temperature increases
This goes to say that the rate of reflection will go down more whenever there is an increase in temperature
What is reflection?Reflection can simply be defined as the the throwing back by a body of light without absorbing it.
reflection of
In conclusion, the rate of a reflection decreases when the temperature increases
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A 0.266-g sample of NaC1 (molar mass = 58.44 g/mol) is dissolved in enough water to make 5.20 mL of
solution. Calculate the molarity of the resulting solution.
O 0.875 M
O 4.55 x 10-3 M
O 0.987 M
O 1.14 M
O 0.731 M
What would the hydrogen ion concentration be if the pOH was 6?
Answer:
10-6mol/l
Explanation:
hope i helped
For the balanced equation: 2H2S + 3O2 → 2SO2 + 2H2O
How many moles of sulfur dioxide will be produced from the reaction of 12 moles of oxygen?
Answer:
8 moles SO₂
Explanation:
To find the moles SO₂, you need to multiply the given value by the mole-to-mole ratio. This ratio, between O₂ and SO₂, is made up of the coefficients from the balanced equation.
2 H₂S + 3 O₂ -----> 2 SO₂ + 2 H₂O
12 moles O₂ 2 moles SO₂
-------------------- x ---------------------- = 8 moles SO₂
3 moles O₂
What is the theoretical yield of bromobenzene in this reaction when 24.8 g of benzene reacts with 52.3 g of bromine?
Answer:
49.8 g C₆H₅Br
Explanation:
The theoretical yield is the maximum calculated amount of product that can be made from a reaction. To find the theoretical yield, you need to (1) determine the chemical reaction which is taking place, then (2) calculate the molar masses of the relevant reactants and product, then (3) convert grams of each reactant to grams of bromobenzene (using molar masses and mole-to-mole ratio from reaction coefficients), and then (4) determine the limiting reagent and the theoretical yield.
(Step 1)
Bromine = Br₂
Benzene = C₆H₆
Bromobenzene = C₆H₅Br
The balanced equation:
Br₂ + 2 C₆H₆ ----> 2 C₆H₅Br + H₂
(Step 2)
Molar Mass (Br₂): 2(79.904 g/mol)
Molar Mass (Br₂): 159.808 g/mol
Molar Mass (C₆H₆): 6(12.011 g/mol) + 6(1.008 g/mol)
Molar Mass (C₆H₆): 78.114 g/mol
Molar Mass (C₆H₅Br): 6(12.011 g/mol) + 5(1.008 g/mol) + 79.904 g/mol
Molar Mass (C₆H₅Br): 157.01 g/mol
(Step 3)
52.3 g Br₂ 1 mole 2 moles C₆H₅Br 157.01 g
----------------- x ------------------ x ------------------------- x --------------- =
159.808 g 1 mole Br₂ 1 mole
= 103 g C₆H₅Br
24.8 g C₆H₆ 1 mole 2 moles C₆H₅Br 157.01 g
------------------- x --------------- x -------------------------- x --------------- =
78.114 g 2 moles C₆H₆ 1 mole
= 49.8 g C₆H₅Br
(Step 4)
Because C₆H₆ produces a smaller amount of product than Br₂, it must be the limiting reagent. This means that it will run out before all of the Br₂ is used up. Therefore, the actual theoretical yield of C₆H₅Br is 49.8 grams.
What do the letters “P.P.E” stand for in chemical
Answer:
Personal Protective Equipment
Explanation:
Some examples of PPE are safety glasses, lab coats, steel-toed shoes, etc.
The purpose of PPE is to keep the user from getting injured when using dangerous equipment or chemicals.
perform the following mathematical operation, and report the answer to the correct number of significant figures. 0.34 x 0.568=?
How do I know how many significant figures to round to?
The correct answer to the problem is 0.193 which is three significant figures.
What are significant figures?The term significant figures has to do with the figures that have a mathematical meaning. We know that the result has to correspond to the highest number of significant figures.
Hence, If we multiply 0.34 x 0.568 the result ought to be recorded as 0.193 which is three significant figures.
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Which scenario would be classified as a conceptual model?
A. A student thinks of bouncing balls as representing gas molecules.
B. Marshmallows and toothpicks are used to show the composition
of a water molecule.
C. A map and a map scale are used to represent a larger area of land.
D. A weather map shows different temperatures over most of the
United States.
The correct answer is A. A student thinks of bouncing balls as representing gas molecules.
What is molecules?When one effectiveness liquefies into another, a resolution is formed. A solution is a homogenous mixture consisting of a solute liquefied into a solvent. The solute is the substance that is being dissolved, while the solvent is the dissolving medium.
Solutions can be formed with numerous different varieties and forms of solutes and solvents. In this department, we will focus on a solution where the solvent is water. An aqueous solution is moisture that contains one or more additional dissolved essence. The dissolved importance in an aqueous resolution may be solids, gases, or different liquids.In directive to be a true explanation, a variety must be stable. When sugar is fully dissolved into water, it can stand for an indefinite quantity of time, and the sugar will not recompense out of the solution. Further, if the sugar-water solution is passed through a filter, it will remain with the water. This is because the liquefied particles in a solution are very small, usually smaller than 1nm in diameter. Solute particles can be particles, ions, or molecules, counting on the classification of nature that has been dissolved.To learn more about molecules, refer to:
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1.______ language is the ability to understand what’s said.
2. When babies handle objects, they learn that they can
make something happen. This helps them begin to
understand and _______.
3. Caregivers can encourage language development by _____
to the baby.
4.______ is the ability of an infant to understand when
an object is present even if he or she can't see it.
5. Language development and thinking ability are _______.
6. Toddlers gain self-confidence when they _______.
Caregivers should expect toddlers to _______.
7.Caregivers should help children select television programs to watch and _______ the time they spend in this activity.
8. Superhero and fantasy play should be tempered with discussing the differences between _______ and reality.
The 1 month old baby sees up to 30 cm away, following objects and people that move around him and fixing his gaze on bright and flashy objects. To say that he wants something or that something is bothering him, the baby usually expresses himself through crying.
What is baby development?1.Clear language is the ability to understand what’s said.
2. When babies handle objects, they learn that they can
make something happen. This helps them begin to
understand and do.
3. Caregivers can encourage language development by sign
to the baby.
4.imagine is the ability of an infant to understand when
an object is present even if he or she can't see it.
5. Language development and thinking ability are indispensable.
6. Toddlers gain self-confidence when they make mistakes.
Caregivers should expect toddlers to mistakes.
7.Caregivers should help children select television programs to watch and monitor the time they spend in this activity.
8. Superhero and fantasy play should be tempered with discussing the differences between fantasy and reality.
With this information, we can conclude that If your baby does not respond to stimuli and even as the months go by, simple steps of the baby's development are not happening, such as smiling, turning around, crawling, the pediatrician will follow up and refer the competent specialist to carry out evaluation tests to investigate a possible delay. psychomotor.
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