[whittfred]

I Have to use this equation:  N2+ 3H2=2NH3 to answer the question

The question states:  If 2.0 moles of N2 reacts completly, how many grams of NH3 will be produced?  I came up with 4.0g. But I don't think its correct.

"PLEASE HELP"

[macman104]

uhh.....you mean, 4 moles?  You need to covert that to grams, 2 moles of N2 creates 4 moles of NH3.  Not 4 grams.

[profmsg]

yeh your right. but your unit for NH3 is not correct should be moles... if you want your answer in grams just convert 2 mole of N2 into gram and multiply by 2 ....

[DrCMS]

yeh your right. but your unit for NH3 is not correct should be moles... if you want your answer in grams just convert 2 mole of N2 into gram and multiply by 2 ....

No they wanted the weight of ammoina produced from 2 moles of nitrogen not the weight of 4 moles of nitrogen.

2N₂ + 3H₂ -> 4NH₃

2 moles of nitrogen give 4 moles of ammonia which weigh 72g in total (4x18 = 72)

[wilson]

No they wanted the weight of ammoina produced from 2 moles of nitrogen not the weight of 4 moles of nitrogen.

2N₂ + 3H₂ -> 4NH₃

2 moles of nitrogen give 4 moles of ammonia which weigh 72g in total (4x18 = 72)

Just wanted to add:
1. Shouldn't the mole coefficient of H₂ be 6?
2. Why (4*18)g? Ammonia's M_r is 17. Then, 4*17=68g

[DrCMS]

No they wanted the weight of ammoina produced from 2 moles of nitrogen not the weight of 4 moles of nitrogen.

2N₂ + 3H₂ -> 4NH₃

2 moles of nitrogen give 4 moles of ammonia which weigh 72g in total (4x18 = 72)

Just wanted to add:
1. Shouldn't the mole coefficient of H₂ be 6?
2. Why (4*18)g? Ammonia's M_r is 17. Then, 4*17=68g

Yes its 68 not 72 and for 2N₂ yes 6H₂ gives 4NH₃.