How many moles of ammonia contain #1.51 * 10^24# #NH_3# molecules?

1 Answer
May 23, 2016

Answer:

#"1 mole of stuff"# specifies #6.022xx10^23# individual items of stuff. So you have approx. 2 moles.

Explanation:

You have #1.51xx10^24# individual ammonia molecules.

#"Moles of ammonia"# #=#

#(1.51xx10^24*"ammonia molecules")/(6.022xx10^23*"ammonia molecles mol"^-1)#

#=# #"approx. 2 moles of ammonia molecules"#, but don't trust my arithmetic!

How many moles of nitrogen, of hydrogen, do you have in the specified quantity?