Question

How many moles are present in 5.0 billion atoms of carbon? ___________ (Answer with the correct number of sig figs)

Answer 1

There are `ul(8.3 × 10^"-15" color(white)(l)"mol")`.

Explanation:

`5.0 × 10^9 color(red)(cancel(color(black)("atoms"))) × "1 mol"/(6.023 × 10^23 color(red)(cancel(color(black)("atoms")))) = 8.3 × 10^"-15" color(white)(l)"mol"`