We need to think about the number of atoms of each element in the reactants and ensure these are the same in the products.
This is the basic UNBALANCED equation.
C4H10 + O2 ----> CO2 + H2O
So we have 4 C atoms on the left so will need 4 CO2 molecules on the right:
C4H10 + O2 ----> 4CO2 + H2O
Similarly we have 10 H atoms on the left so therefore need 5 H2O molecules on the right (as each H2O molecule has 2 H atoms)
C4H10 + O2 ----> 4CO2 + 5H2O
Now we just need to balance the O atoms. We have 8 + 5 on the right hand side = 13, as oxygen is present as O2 (ie two O atoms in each molecule) we therefore need 7.5 O2 molecules on the left hand side:
C4H10 + 7.5O2 ----> 4CO2 + 5H2O
or to keep in whole numbers,multiply everything by two:
2C4H10 + 13O2 ----> 8CO2 + 10H2O
The name of the products are CO2 = carbon dioxide and H2O = water. The type of reaction is a combustion reaction.