What mass of nitrous oxide gas (N2O) is contained in 20.0 L balloon at a pressure of 110.0 kPa and a temperature of 25 C?

40.94 g

Explanation:

Given dа ta:

Mass of NO₂ = ?

Volume = 20.0 L

Pressure = 110.0 Pka

Temperature = 25°C

Solution:

Pressure = 110.0 KPa (110/101 = 1.1 atm)

Temperature = 25°C (25+273 = 298.15 K)

The given problem will be solve by using general gas equation,

PV = nRT

P = Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm. L / mol. K

T = temperature in kelvin

n = PV/RT

n = 1.1 atm * 20.0 L / 0.0821 atm. L / mol. K * 298.15 K

n = 22 / 24.5 / mol

n = 0.89 mol

Mass of NO₂:

Mass = number of moles * molar mass

Mass = 0.89 mol * 46 g/mol

Mass = 40.94 g