How many moles of o2 are required to react with 8.0 moles h2?

O2+ 2 H2 --> 2 H2O

x mol O2 - 8 mol H2
1 mol O2 - 2 mol H2



4 moles

4- c, because all matter stays the same no matter what. it is still there. 5- b, because matter is known as mass. 6-c because, flammability is a chemical property. malleability is changing the shape of an object.