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lord [1]
3 years ago
15

Q. Read the given questions carefully and then select the appropriate answer

Chemistry
1 answer:
LUCKY_DIMON [66]3 years ago
5 0

Answer:

a. moles divide by volume

Explanation:

Molarity, denoted by symbol M, refers to the molar concentration of a solution. It is calculated using the formula as follows:

Molarity = number of moles of a solute ÷ volume of the solvent

Since, number of moles (n) has the unit: moles and volume (V) has the standard unit: Litres, then the unit for molarity is moles/litre or M.

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Given that,

Original pressure of air (P1) = 1.08 atm

Original volume of air (T1) = 145mL

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New volume of air (V2) = 111L

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Since pressure and volume are given while temperature is held constant, apply the formula for Boyle's law

P1V1 = P2V2

1.08 atm x 0.145L = P2 x 111L

0.1566 atm•L = 111L•P2

Divide both sides by 111L

0.1566 atm•L/111L = 111L•P2/111L

0.0014 atm = P2

Thus, the new pressure of air when the volume is decreased to 111 L is 0.0014 atm

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