Question

When 2 moles of ammonia (NH3) decomposes into nitrogen gas (N2) and hydrogen gas (H2), how many moles of NITROGEN gas are produced?
1 mole
2 moles
3 moles
4 moles

Answer 1

I showed you how to do the H2 gas in your last problem. You should be able to do this one yourself. Just follow those coefficients. Post a follow up question if you don't understand how this works.

Answer 2

I still don’t understand completely

Answer 3

Would it be 2?

Answer 4

I'm having trouble understanding what it is you don't understand but let's keep trying. Here is the equation. 2NH3 ==> N2 + 3H2. Here is the way the equation is read.
"2 moles of NH3 decompose to produce 1 mole of N2 and 3 moles of H2." So the equation TELLS you that 2 moles NH3 will produce 1 mol N2 and 3 moles H2. You see that ==> arrow is an equal (=) sign. The 2 moles NH3 on the left = 1 mol N2 on the right OR 2 moles NH3 on the left = 3 mole H2 on the right. Let's talk about shoes. Suppose you have a shoe. That shoe has a heel and 3 nails holding it together.Now let's tear it apart. The equation would look like this.
1 shoe ==> 1 heel + 3 nails.
So if I said you had 1 shoe and you tore it apart you would immediately tell me it had 3 nails BECAUSE the coefficients tell you 1 shoe = 3 nails.
Don't give up. If you still don't understand please give me your thoughts and exactly what trouble you are having understanding what to do. This is fundamental. It isn't rocket science. Is it you are being confused because of moles? Or symbols? or exactly where is the mental block?

Answer 5

So I have 2 moles of NH3 which mean I would have 2 moles of N2 and 2 moles of H2?

Answer 6

Where are you getting 3H2?