Volume of gas yielded by 25L liquid nitrogen at RTP

hey

What is the volume of gas at RTP yielded by 25L of liquid nitrogen?

Density of liquid nitrogen (check) =  0.807 g/ml so find the mass of 25L by (0.807 x 25000) g. Then find the number of moles N2 in this by (0.807 x 25000)/28. where 28g is the approx molar mass of N2. This is n. Plugin to V =  nRT/P using the conditions of rtp (stp?)

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