Here's the question you clicked on:
Grazes
3H2 + N2 --> 2NH3 How many grams of N2 is required to react completely with 44.8 L of H2?
Assume that they are all gasses
do you have the answer to this? I think it's 209 g of N2
I wasn't sure how grams tied in to this. I don't know the answer, sorry ):
it just my guess but let's have someone good at this to check @zepp
don't you have to convert from L to mol then mol to grams ?
At the normal temperature, the density of hydrogen gas would be 0.0899 kg/m3
Convert your liters to Grams, then convert to moles, use the reaction to find out how may N_2 moles it takes. then convert to grams