Question

`Ni(C_2H_3O_2)_4` How many atoms are represented in this formula?

Answer 1

Just like in maths, the parentheses go for everything between them.

Explanation:

So we have:
`1Ni`
`2Cxx4=8C`
`3Hxx4=12H`
`2Oxx4=8O`
For a total of `1+8+12+8=29` atoms