Dinitrogen monoxide gas is collected at 19.0 °c in an evacuated flask with a measured volume of 30.0 l. when all the gas has been collected, the pressure in the flask is measured to be 0.500 atm . calculate the mass and number of moles of dinitrogen monoxide gas that were collected.

The mass of dinitrogen monoxide gas that is collected is 27.6 grams

Explanation:

Step 1: Data given

Molar mass of N2O = 44.013 g/mole

Temperature = 19.0 °C = 292 Kelvin

volume of the gas = 30.0 L

Pressure of the gas = 0.500 atm

Gasconstant = 0.08206 L*atm/K*mol

Step 2: Calculate number of moles

via the ideal gas law:

P*V = n*R*T

n= (P*V)/(R*T)

n= (0.500 atm * 30.0 L)/(0.08206 L*atm/K*mol  *292 K)

n =0.626

Step 3: Calculate mass of dinitrogen monoxide

mass = number of moles * Molar mass

mass of N2O = 0.626 moles * 44.013 g/mole

mass of N2O = 27.6 grams

The mass of dinitrogen monoxide gas that is collected is 27.6 grams

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