To identify a diatomic gas ( X2 ), a researcher carried out the following experiment: She weighed an empty 6.4- L bulb, then filled it with the gas at 1.30 atm and 27.0 ∘C and weighed it again. The difference in mass was 9.5 g . Identify the gas.

Dinitrogen is a chemical compound fashioned from the covalent bonding of two nitrogen atoms. it's far a colorless, odorless gas at room temperature and pressure, which makes up about seventy-eight % of the Earth's environment.

Diatomic gas is a chemical compound formed from the covalent bonding of two nitrogen atoms. it's miles drab, odorless gasoline at room temperature and stress, which makes up about seventy eight % of the Earth's surroundings.

Volume = 6.4 L

Pressure = 1.3 atm

Temperature = 25 C = 298 K

R = 0.08206 L.atm/mol.K

P * V = n * R * T

1.3 atm * 6.4 L = n * 0.08206 L.atm/mol.K * 298 K

n = 0.34 moles

difference of mass is the mass of gas = 9.5 g

Molar mass = Mass / No. of moles = 9.5 g / 0.34 moles = 27.9 g/mol

diatomic gas with molar mass 28 g/mol is N2

Hence the diatomic molecule is N2

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