Question

reacation between h2 and o2

Answer 1

It's not h2 and o2
It's h and o ,hydrogen and oxygen
To react the, we need 4 atoms of h and 2 atoms of o
H(4)+0(2)=h(2)o
So 4 hydrogen=2 oxygen give= 1 molecule of water (when heated)
Heat is required for the reaction
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