Balancing equations help??

Question

would anyone be able to explain to me how these equations are balanced??

1) iron + sulfuric acid -----> iron sulfate + hydrogen gas

2) potassium hydroxide + phosphoric acid ------> potassium phosphate + water

3) tin oxide + hydrogen gas ----> tin + water

4) hydrochloric acid + sodium hydroxide ----> sodium chloride + water

Answer 1

first would be to know what each molecule is such as what is iron sulfate or sulfuric acid then use charge to get the proper amount of each atom for each side such as FeSO4 and then figuring out that Sulfuric acid is H2SO4 and then you need one Iron atom and one sulfuric acid molecule and then one Iron sulfate and one H2 gas molecule the rest is the same

Answer 2

1) iron + sulfuric acid -----> iron sulfate + hydrogen gas

Fe + H2SO4 -----> FeSO4 +H2

2) potassium hydroxide + phosphoric acid ------> potassium phosphate + water

KOH + H3PO4 -----> KH2PO4 +H2O

3) tin oxide + hydrogen gas ----> tin + water

SnO +H2  ---->Sn + H2O

4) hydrochloric acid + sodium hydroxide ----> sodium chloride + water

HCl + NaOH ----> NaCl + H2O

For your help in future,first you should  know what each molecule is and their formula.Then you should be able to write the equation as mentioned.At last ,you should balance the equation with equal number of molecules on each side.

Hope this helped.