Find the mass in grams of 4.48 liters of f2 gas at stp

Mass = 7.6 g

Explanation:

Given data:

Volume of F₂ gas = 4.48 L

Standard Temperature = 273 K

Standard Pressure = 1 atm

Mass of gas = ?

Solution:

PV = nRT

P = pressure

V = Volume

n = number of moles

R = general gas constant

T = temperature

n = PV/RT

n = 1 atm×4.48 L / 0.0821 atm. L/ mol.K × 273 K

n = 4.48 atm. L / 22.4 atm. L/mol

n = 0.2 mol

Mass of  F₂ gas :

Mass = number of moles  × molar mass

Mass = 0.2 mol  × 38 g/mol

Mass = 7.6 g

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