How many moles of h2o are produced when 64.0 g c2h2 burns in oxygen?

the balanced eqaution for the combustion of C2H2 is as follows
2C₂H₂  + 5O₂ --> 4CO₂ + 2H₂O
   
stoichiometry of C₂H₂ to H₂O is 2:2 .
Number of moles of C₂H₂ = mass present / molar mass of C₂H₂  
Since molar mass of C₂H₂  is 26 g/mol.
Number of C₂H₂  moles reacted = 64.0 g / 26 g/mol = 2.46 mol.
according to molar ratio of 2:2.
the number of H₂O moles formed = number of C₂H₂  moles reacted.
Therefore number of H₂O moles produced = 2.46 mol

The "American System" stated that America will grow and prosper when...

we involve ourselves more with other nations.

we allow other nations to trade freely without taxes or tariffs.

we invest in our nations roads and bridges and physically unite America.

we become more aggressive militarily in foreign affairs.

Explanation:

i think that would be a good one not sure