# Chemistry

How many grams of nitrogen are required to react with 2.79g of hydrogen to produce ammonia?
A) 25.8 g B) 13.0 g C) 78.2 g D) 38.7 g E) 77.4 g

I get the answer as 38.7 but it is meant to be B
I did 2.79g x 3molH2/2.016g/mol x 1molN2/3molH2 x 28.02g/mol/1moleN2

1. 👍 1
2. 👎 0
3. 👁 2,284
1. Whats the equation to form NH2?

N2 +3H2 -----> 2NH3

So, you need 3 moles of H2 gas for 1 mole of N2:

How many moles of hydrogen are present in 2.79 g of Hydrogen?

2.79 g of H2*(1 mole/2.016g)=1.384 moles of H2

1.384 moles of H2 requires how many moles of N2?

1.384 moles of H2*(1 mole of N2/3 moles of H2)=0.4613 moles of N2

0.4613 moles of N2*(28.014g/mole)=12.9 g of N2=13.0g of N2.

I do it in steps when explaining. Also, it is better for accounting reasons in order to find errors. But you could do it all in one step, and you should still get the same answer:

2.79 g of H2*(1 mol/2.016g)*(1 mol N2/3 mol of H2)*(28.014g/mole)= 13.0g of N2

1. 👍 2
2. 👎 0

## Similar Questions

1. ### Chemistry

Nitrogen and hydrogen combine at high temperature, in the presence of a catalyst, to produce ammonia. N2(g)+3H2(g)-->2NH3(g) Assume 4 molecules of nitrogen and 9 molecules of hydrogen are present. After complete reaction, how many

2. ### Chemistry

a) Ammonia, an important source of fixed nitrogen that can be metabolized by plants, is produced using the Haber process in which nitrogen and hydrogen combine. N2(g) + 3H2(g) → 2NH3(g) How many grams of nitrogen are needed to

3. ### chemistry

Automotive air bags inflate when sodium azide, NaN3, rapidly decomposes to its component elements: 2NaN3(s)→2Na(s)+3N2(g) a)How many moles of N2 are produced by the decomposition of 1.60mol of NaN3? b)How many grams of NaN3 are

4. ### stoichiometry

Ammonia gas reacts with oxygen gas according to the following equation: 4NH3 + 5O2----4NO + 6H2O a. How many moles of oxygen gas are needed to react with 23 moles of ammonia? (29 mole) b. How may grams of NO are produced when 25

1. ### CHEMISTRY

Nitrogen and hydrogen react to form ammonia. Consider the mixture of N2 and H2 in a closed container as illustrated below. The container contains 6 hydrogen atoms and 6 nitrogen atoms (all diatomic) Assuming the reaction goes to

2. ### Chemistry

Identify the following chemical equations by type. 1. If an electric discharge produces 500 cm3 of ozone (O3), how many cm3 of oxygen (O2) are required? 3O2(g) ---> 2O3(g) 2. When 2.75 dm3 of O2 react with an excess of glucose

3. ### chemistry

if an excess of nitrogen is reacted with 3.41 g of hydrogen, how many grams of ammonia can be produced?

4. ### Chemistry

what mass of nitrogen gas is required to react completely with 2.79 of hydrogen gas to produce ammonia?

1. ### Chemistry

The Haber process is used to synthesize ammonia from hydrogen and nitrogen. How much hydrogen is required to produce 42.8 kg of ammonia?

2. ### chemistry

Nitrogen gas can be prepared by passing ammonia over solid copper (II) oxide according to the equation 2 NH3 + 3 CuO (s) --> N2 (g) + 3 Cu (s) + 3 H2O (g) Suppose 18.1 grams of ammonia is reacted with 90.4 grams CuO. a) What is

3. ### Chemistry

A mixture of nitrogen gas and hydrogen gas reacts in a closed container to form ammonia gas. The reaction ceases before either reactant is completely consumed. At this stage the container has 3.0 mol each of all three gases;

4. ### Chemistry

Ammonia is composed of hydrogen and nitrogen in a ratio of 9.33 g of nitrogen to 2.00 g of hydrogen. If 2.19 g of nitrogen combined completely with hydrogen to form ammonia, what mass (g) of ammonia would be formed?