# science

posted by .

How many moles of oxygen molecules, O2, are required to produce 0.268 mol of K2Cr2O7? Show your work.

## 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. ### help with stochiometry

can someone help me out with this one? balanced equation is: 2H2 + O2 > 2H2O My questions are: How many molecules of water are produced from 2.0 * 10 ^23 molecules of oxygen?
3. ### Chemistry

1)The chemical formula for aspirin is C9H8O4. What is the mass of 0.40 mol of aspirin?
4. ### chemistry

1)how many molecules of water are needed to produce 6 molecules of C6H12O6 according to the equation 6CO2(G)+6H2O(L)+energy TO C6H12O6(S)+6O2(G)?
5. ### science

1)how many molecules of water are needed to produce 6 molecules of C6H12O6 according to the equation 6CO2(G)+6H2O(L)+energy TO C6H12O6(S)+6O2(G)?
6. ### chemistry

how many molecules are in 5.5 moles of oxygen gas?
7. ### Chemistry

1. Oxygen (O2) is about 20% of our air, with about 80% nitrogen and a bunch of minor components. In Colorado Springs, where I grew up, the elevation is ~ 6500 feet and atmospheric pressure is only around 9 psi (vs. 14.7 psi at sea …
8. ### Chemistry- DrBob222

Please check. Oxygen (O2) is about 20% of our air, with about 80% nitrogen and a bunch of minor components. In Colorado Springs, where I grew up, the elevation is ~ 6500 feet and atmospheric pressure is only around 9 psi (vs. 14.7 …
9. ### Chemistry

Oxygen (O2) is about 20% of our air, with about 80% nitrogen and a bunch of minor components. In Colorado Springs, where I grew up, the elevation is ~ 6500 feet and atmospheric pressure is only around 9 psi (vs. 14.7 psi at sea level). …
10. ### Physical Science

When iron metal reacts with oxygen, the reaction can form Fe203. The balanced chemical equation I think is right is 4 Fe + 302----2Fe203. So I have 4 moles of iron + 3 moles of oxygen creates 2 moles of iron oxide. I need to find the …

More Similar Questions