# AP CHEMISTRY NEED HELP PLEASE

posted by .

What Volume of nitrogen at STP would be required to react with 0.100 mol of hydrogen to produce ammonia?
N2(g) +3H2 (g)(arrow) 2NH3(g)

• AP CHEMISTRY NEED HELP PLEASE -

Here is a worked example of a stoichiometry problem but you don't need to go through conversion to moles since the problem starts with moles. But here it is.
http://www.jiskha.com/science/chemistry/stoichiometry.html
All you need to do is to convert 0.1 mole H2 to N2.
0.1mol H2 x (1/3) = mole N2.
Then remembering that 1 mole N2 occupies 22.4 L at STP, convert to L.

• AP CHEMISTRY NEED HELP PLEASE -

I am sorry, I must be really tired. I am not getting this. Have a huge exam tomorrow and am stuck on this right now. Why am I multiplying by 1/3 ? I know this must sound silly to you but can you please explain this again. Thank You

• AP CHEMISTRY NEED HELP PLEASE -

My answer is 0.672? Is this correct? Thank You

• AP CHEMISTRY NEED HELP PLEASE -

You must convert moles H2 to moles N2. You do that using the coefficients in the balanced equation. The equation TELLS you that it takes 3 moles H2 for each mole N2; i.e., 1/3 mol N2 = 1 mole H2 so 0.1 mole H2 will require 1/3 of that or 0.0333 moles N2.
No, your answer isn't right and I know what you did wrong. You divided 0.1/3 and read the first digit only (or your calculator rounded to the first digit) and you let the others go. 0.1/3 = 0.333 and that x 22.4 is 0.7 something. When I calculate ANYTHING, I never copy it onto paper and re-enter it in the calculator later. I let that number sit in the calculator and use it again as needed. That way, whatever is in the calculator (too many digits and more significant figures even than I'm allowed) just sits there. I round at the end of the problem to the right number of significant figures.

## Similar Questions

1. ### Chemistry

What volume of hydrogen is necessary to react with five liters of nitrogen to produce ammonia?
2. ### Chem-Gas Stoichiometry

N2+3H2->2NH3 What volume of hydrogen is necessary to react with five liters of nitrogen to produce ammonia?
3. ### chemistry

What volume at STP would be required to react with 0.100 mol of hydrogen to produce ammonia?
4. ### chemistry NEED HELP please

N2(g) + 3H2(g) ==> 2NH3(g) A. If 16.99 g of hydrogen is reacted at STP, volume of ammonia is produced?
5. ### AP CHEMISTRY

what volume of nitrogen at 215 degrees celsius and 715mm Hg would be required to react with 0.100 mol of hydrogen to produce ammonia?
6. ### chemistry

What volume of nitrogen at 215 degress celcius and 715 mmHg would be required to react with .100 moles of hydrogen to produce ammonia?
7. ### chemistry

What volume of nitrogen at 215 degress celcius and 715 mmHg would be required to react with .100 moles of hydrogen to produce ammonia?
8. ### Math

What volume of hydrogen is necessary to react with five liters of nitrogen to produce ammonia?
9. ### chemistry

QUESTION 10 Ammonia gas is formed from nitrogen gas and hydrogen gas according to the following equation: N2 (g) + 3H2 (g) Imported Asset 2NH3 (g). If 112 grams of nitrogen gas is allowed to react with an excess of hydrogen gas to …
10. ### chemistry

QUESTION 11 Ammonia gas is formed from nitrogen gas and hydrogen gas, according to the following equation: N2 (g) + 3H2 (g) Imported Asset 2NH3 (g). If 84.0 g of nitrogen gas is allowed to react with an excess of hydrogen gas to produce …

More Similar Questions