What is the density (in g/l) of a gas with a molar mass of 146.06 g/mol at 1.03 atmosphere and 297 k

According to Ideal Gas Equation,

P V = n R T

Also,

n = mass / M. mass

So,

P V = (mass * R * T) : M. mass

Or,

P * M. mass = (mass * R * T) : V

Since,

Density = mass / volume

So,

P * M. mass = Density * R * T

Or,

Density = (P * M. mass) : (R * T)

Putting Values,

Density = (1.03 atm * 146.06 g/mol) : (0.0821 L. atm. mole⁻¹. K⁻¹ * 297 K)

Density = 6.16 g/L