# Chemistry

posted by .

For the theoretically perfect reaction 2H² +O²---2H²O if you react 300 molecules pf hydrogen and 200 molecules of oxygen, how many oxygen molecules will you have that do not engage in the reaction? Answer 50, 100, 150, or 200?

• Chemistry -

You only need 150 moles of O2 to burn up the hydrogen. You will have 50 moles left.

• Chemistry -

## Similar Questions

1. ### moles to moles

Two molecules of hydrogen react with one molecule of oxygen to produce two molecules of water. How many molecules of water are produced from 2.0 * 10 23 power molecules of oxygen?
2. ### Chemistry - Equations

I am a student in the ninth grade and I need help with the following problems because I do not understand how to do them. I appreciate your help and thanks once again. 7. in 2CO(grams) + O2(grams) => 2CO2(grams), what is the ratio …
3. ### AP Chem

which would be the limiting reagent in the reaction: 2H2(g) + O2(g) => 2H2O(g) 1. 50 molecules of H2 or 2. 50 molecules of O2
4. ### chemistry

36 colored paper clips (12 each of 3 different colors) 1.Each paper clip represents a single atom. Designate a different color of paper clip to represent atoms of oxygen (O), hydrogen (H), and carbon (C). Makes two molecules each of …
5. ### Chemistry

Given the chemical reaction: N2+3H2--->2NH3 If 20 molecules of nitrogen react with 30 molecules of hydrogen to from ammonia, what is the total number of molecules present after the reaction goes to completion?
6. ### chemistry

Nitrogen (N2) and hydrogen (H2) react to form ammonia (NH3). Consider a mixture of six nitrogen molecules and six hydrogen molecules in a closed container. Assuming the reaction goes to completion, what will the final product mixture …
7. ### chemistry

Nitrogen (N2) and hydrogen (H2) react to form ammonia (NH3). Consider a mixture of six nitrogen molecules and six hydrogen molecules in a closed container. Assuming the reaction goes to completion, what will the final product mixture …
8. ### chemistry 101

calculate the molecules of oxygen required to react with 28.4g of sulfur in the following reaction?
9. ### Chemistry

True or False? An identical cylinder filled with the same pressure of hydrogen contains more molecules because hydrogen molecules are smaller than oxygen molecules.
10. ### Chemistry

Two molecules of hydrogen react with one molecule of oxygen to produce two molecules of water. How many molecules of water are produced from 2.0 x 1023molecules of oxygen?

More Similar Questions