Volume & Moles: Avogadro's Law

Video on Avogadro's Law

Notes on Avogadro's Law

Under constant temperature and pressure, volume is directly proportional to the number of moles

V = k (k=constant)

n

or

V₁ = V₂

n₁ n₂

_{(n=number of moles)}

Exercises on Avogadro's Law

1. If 0.105 mol of helium gas occupies a volume of 2.35 L at a certain temperature and pressure, what volume would 0.337 mol of helium occupy under the same conditions?

2. If 2.01 g of helium gas occupies a volume of 12.0 L at 25 C, what volume will 6.52 g of helium gas occupy under the same conditions?

3. If 3.25 mol of argon gas occupies a volume of 100. L at a particular temperature and pressure, what volume does 14.15 mol of argon occupy under the same conditions?

4. If 3.20 g of O₂ gas occupies a volume of 2.24 L at 0 C and a pressure of 1.00 atm, what volume would be occupies at 32.00 g of O₂ gas under the same conditions?

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