In the reaction, 2h2 + o2 --> 2h2o, how many hydrogen molecules are needed to produce two water molecules?

a.
1
c.
3
b.
2
d.
4

2 is the correct answer because with 2O2 molecules it balances the chemical equation.

Hope that helps

Since there is the same amount of agn03 in both silver chloride and silver nitrate they produce the same amount of moles. therefore silver chloride produces the same amount of silver nitrate, so your answer is 15.0 moles of silver nitrate. i hope this !

Answer) by studying proton collisions hope this : )