Chemical equation

Question

How many moles of ammonia will be formed when 12g of hydrogen is reacted with nitrogen?

Answer 1

Might I also add the importance of understanding that there are 7 diatomic molecules; N and H are two of those 7 and are written as N₂ and H₂ when writing them in chemical equations. Di-atomic references the "2 atoms" covalently bonded with themselves.

Answer 2

Already asked and answered. But here it is AGAIN.

Balanced equation:

N₂ + 3H₂ ==> 2NH₃

moles H₂ present = 12 g H₂ x 1 mole/2 g = 6 moles H₂

Assuming N₂ is present in excess, we have....

6 moles H₂ x 2 moles NH₃/3 mole H₂ = 4 moles NH₃ formed

Answer 3

Balanced equation:

N₂ + 3H₂ ==> 2NH₃

moles H₂ present = 12 g H₂ x 1 mole/2 g = 6 moles H₂

Assuming N₂ is present in excess, we have....

6 moles H₂ x 2 moles NH₃/3 mole H₂ = 4 moles NH₃ formed