Question

how many moles of carbon are in 7.87^10e7

Answer 1

Answer:

There are 6.022*10^23 molecules in 1 mole of carbon

So how many will moles will be 7.87*20^7?

Let the required number of moles be ‘x’.

1 mole ———6.022*10^23

x moles———7.87*10^7

(Cross multiplication)

x=7.87*10^7/6.022*10^23

Therefore x=1.3*10^-16