Question 1(Multiple Choice Worth 5 points)
(06.03 MC)
A 2.5-liter sample of a gas has 0.30 mole of the gas, If 0.15 mole of the gas is added, what is the final volume of the gas? Temperature and pressure remain
constant
3.4 liters
• 3.8 liters
4.2 liters
4.7 liters

B) 3.8 liters

Explanation: Using the Avogadro's Law states which states that the volume of a gas is directly proportional to the number of moles of gas.

Represented as

V ∝ n

(V₁/V₂) = (n₁/n₂)

V is volume of gas

n is number of moles

So the data we were given;

V₁ = 2.5

V₂ = X

n₁ = 0.30

n₂ = 0.30 + 0.15 = 0.45

(V₁/V₂) = (n₁/n₂)

V₁n₂ = V₂n₁

V₂ = V₁n₂ / n₁

We input our numbers

V₂= (2.5 × 0.45) / 0.30

V₂ = 1.125 / 0.30

V₂ = 3.75 approximately 3.8 litres

Therefore final volume of the gas will be 3.8 litres

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