Question

How to balance equations ?

Answer 1

To balance the equation you need to make the number of each atom/element is the same on each side.

For example, to balance SnO2 + H2 → Sn + H2O there are 2 oxygen atoms on the reactants side but only 1 on the products side so you will put a 2 in front of the H20 like so; SnO2 + H2 → Sn + 2H2O but now there are 4 hydrogen atoms on the right so you balance it again by putting a 2 in front of the hydrogen on the right hand side like so, SnO2 + 2H2 → Sn + 2H2O.

When balancing equations though you cannot change the subscript numbers you can only put numbers in front of each element/atom.

Answer 2

Thank you Amy

Answer 3

When SnO2 +H2 → Sn + H20 becomes SnO2 +H2 → Sn + 2H20 are the hydrogen atoms multiplied or added

Answer 4

multiplied