Question

how to balance an equation ?

Answer 1

we just have to see that the no. atoms on the reactants side are equal to the no. of atoms on the products side.

hope this helps.........

Answer 2

Here are the steps:

1) Take an equation:

H² + O² -----› H²O

2) See the number of atoms of the first element in the left, here it is H with two atoms.

3) See it's number on the right. It's sand so nothing to do.

4) Now see the number of O atoms on left, it is two but in the right side it's just one so add 2 before H²O.

H² + O² -------› 2H²O

5) But this changes the number of H on right so equalise it by putting the right number on left.

2H² + O² ------› 2H²O

Now it's balanced. Basically we just have to equalise the number of atoms on both the side.

Hope it helps ^_^