Question

How many moles of hydrogen in are 14.0 g of NH3?

4.7 mol
42 mol
0.82 mol
2.5 mol

Answer 1

Hello!
The answer would be the last one (2.5)
Hope this helps

Answer 2

2.5 mole

Step-by-step explanation:

Molar mass of NH3 = (14 × 1) + (1 × 3) = 17g

If 3 moles of Hydrogen are in 17g of NH3

x moles of Hydrogen are in 14g of NH3

x = (14 × 3)/17

x = 2.47 mol

x ≈ 2.5 mol