Question

How do you multiply `6.02x10^23 * 7.5x10^24`?

Answer 1

Key points to remember
`b^m*b^n = b^(m+n)`
and
`(pxxq)*(rxxs) " can be rearranged as " (pxxr)xx(qxxs)`

So
`6.02xx10^23*7.5xx10^24`

`= (6.02xx7.5) xx (10^23xx10^24)`

`= 45.15 xx 10^47`