Will give you In two or more complete sentences, explain how to balance the combustion equation:
_C5H12 + _02_CO2 + H20
Look at the picture

C5H12+8O2⇄5CO2+6H2O

Explanation:

to balance a combustion reaction carbon should be balanced first,then hydrogen followed by oxygen.(it should always be balanced in this order C⇒H⇒O)

hope it helps

the answer to your question is:

strong-mayor system

question 10: the answer is c, to their constituents address a problem.

question 11: i think it would be domestic bills, which deal with american issues only and public bills, which affect the whole nation.