What volume will 155 g of butane occupy at 745 torr and 35 C?

To find the volume of 155 g of butane (C₄H₁₀) at 745 torr and 35°C, we can use the Ideal Gas Law, PV = nRT. First, convert the mass of butane to moles (molar mass ≈ 58.12 g/mol), giving us about 2.67 moles. Then, convert the pressure to atm (745 torr ≈ 0.978 atm) and the temperature to Kelvin (35°C ≈ 308 K). Finally, using R = 0.0821 L·atm/(K·mol), we calculate the volume: V = nRT/P, which results in a volume of approximately 67.5 liters.