How much mass is in a 3.25-mole sample of #NH_4OH#?

1 Answer
Jun 20, 2018

Answer:

#"114 g"#.

Explanation:

First, we'll need to find out the mass of #1# mole of #NH_4OH#.
To do this, we need to add up the masses of one mole, or molar masses, of its constituent atoms:

#"1 mole" = N+Hxx4+O+H = "14.01 g/mol" + "1.008 g/mol" xx 4 + "16.00 g/mol" + "1.008 g/mol" = "35.05 g/mol"#

Now, to find the mass of #3.25# moles of #NH_4OH#, we'll just need to multiply its molar mass by #3.25#:

#"mass" = "number of moles" xx "mass of 1 mole"#
#= "number of moles" xx "molar mass"#
#= "3.25 mol" xx "35.05 g/mol" = "114 g"#