Answer:
1.625 mol.
Explanation:
- To calculate the no. of moles of a gas, we can use the general law of ideal gas: PV = nRT.
where, P is the pressure of the gas in atm.
V is the volume of the gas in L.
n is the no. of moles of the gas in mol.
R is the general gas constant.
T is the temperature of the gas in K.
- If P and T is constant, and have two different values of (n and V):
n₂V₁ = n₁V₂
n₁ = 1.05 mole, V₁ = 5.17 L.
n₂ = ??? mole, V₂ = 8.0 L.
∴ n₂ = n₁V₂/n₂ = (1.05 mole)(8.0 L)/(5.17 L) = 1.625 mol.
