# Whats the mass of the sample?

Hi!

A simple He occupies 44.8L at STP. what is the mass of the sample?

my answer was 4g since the atomic mass is 4u but I am wrong. someone/anyone enlighten me towards the right path so I may be one again.
Thanks!
Dx

Homework Helper
Gold Member
44.8 L at STP is how many moles?

Originally posted by Bystander
44.8 L at STP is how many moles?

I donno? the question doesn't say. nor can i find out how to compute that since i don't have the mass.