How do you find the mass, in grams, of #5.00 xx 10^23# molecules of #N_2#?

1 Answer
Aug 17, 2017

Answer:

The mass of #5.00xx10^23# molecules of #"N"_2# is #"23.3 g N"_2"#.

Refer to the explanation for the process.

Explanation:

One mole of #"N"_2# contains #6.022xx10^23# molecules. The mass of one mole of #"N"_2# is #"28.014 g/mol"#.

To determine the mol #"N"_2# molecules, divide the given number of molecules by #6.022xx10^23# molecules/mol by multiplying by the inverse. Then multiply by the molar mass of #"N"_2#.

#5.00xx10^23color(red)cancel(color(black)("molecules N"_2))xx(1"mol N"_2)/(6.022xx10^23color(red)cancel(color(black)("molecules N"_2)))xx(28.014"g N"_2)/(1color(red)cancel(color(black)("mol N"_2)))="23.3 g N"_2"#