Question

I need help with questions D and E.

Answer 1

Al + H2SO4 =  Al2(SO4)3 + H2 single replacement

We still need to balance it though al needs a 2

2Al + H2SO4 =  Al2(SO4)3 + H2

SO4 needs a 3 so

2Al + 3H2SO4 =  Al2(SO4)3 + H2

now the H on the right needs a 3 to be equal to left h's 6

2Al + 3H2SO4 =  Al2(SO4)3 + 3H2

Balanced.



C5H12 + O2 = H2O + CO2 double replacement

so we need 5 c so

C5H12 + O2 = H2O + 5CO2

now we need 6 h's to equal left h's 12

C5H12 + O2 = 6H2O + 5CO2

the left O needs an 8 to equal right side

C5H12 + 8O2 = 6H2O + 5CO2

Balanced