What mass of NH3 will contain same number of molecules as that in 36 grams of H2O?

Question

asked Aug 21, 2024 100k views

1 Answer

Four · Answer 1 · 2024-08-26T21:40:33+0000

Answer:

34 g

Step-by-step explanation:

1. Convert the grams to moles.

Mr of H2O = 18

36 ÷ 18 = 2

There are 2 mols of H2O in 36g.

2. Use the mole ratio

NH3 must have the same moles as H2O in this case to have the same number of molecules.
So the moles of NH3 = 2 mols

3. Calculate the mass

Mr of NH3 = 17

2 x 17 = 34