How many grams of H20 are produced when 140 grams of NH3 reacts by the following?

Answer in 3 SF
4NH3+6NO--->5N2+6H20
Please help! Thanks

calculte the moles of NH3 in 140 grams.

Then, the moles of water is 6/4 of that.
Then, grams of water is that number of moles*18

140/17*6/4*18 check me.