Question

the relation between density and molar mass of gaseous substance is f = PM/RT, where f is density of substance P is pressure of gaseous substance M is molar mass, r is gas constant (=8.3J mol-1 k-1) and T is temperature is k. what is the density of H2 gas at 27C and 249K P a pressure.​

Answer 1

Answer:

Explanation:

249*10^3*2/(8.3*300)

Answer 2

Given info : the relation between density and molar mass of gaseous substance is f = PM/RT, where f is density of substance P is pressure of gaseous substance M is molar mass, R is gas constant ( = 8.3J/mol/k) and T is temperature in K.

To find : the density of H2 gas at 27°C and 249 KPa pressure is..

solution : molecular weight of H2 gas , M = 2 g/mol = 2 × 10¯³ kg/mol

temperature, T = 27°C = 300K

pressure, P = 249Kpa = 2.49 × 10⁵ Pa

now, density of hydrogen gas, f = PM/RT

= (2.49 × 10⁵ × 2 × 10¯³)/(8.3 × 300)

= 0.02 × 10²

= 2 kg/m³

Therefore the density of hydrogen gas is 2 kg/m³