Question

Please help ASAP! What mass of hydrogen is needed to produce 10 moles of ammonia (NH3)?

N2 +
3H2 → 2NH3
30 moles
30 grams
15 grams
15 moles

Answer 1

Mass = 30 g

Step-by-step explanation:

Given data:

Mass of hydrogen needed = ?

Number of moles of ammonia produced = 10 mol

Solution:

Chemical equation:

N₂ + 3H₂ → 2NH₃

Now we will compare the moles of ammonia and hydrogen.

NH₃ : H₂

2 : 3

10 : 3/2×10 = 15 mol

Mass of hydrogen needed:

Mass = number of moles × molar mass

Mass = 15 mol × 2 g/mol

Mass = 30 g