Question

How many moles of carbon do you have in a trillion carbon

atoms? (Please report your answer to 2 significant figures)

Answer 1

`1.7* 10^(-12)` moles of carbon

Step-by-step explanation:

1 trillion =
`10^(12)`

Avogadro number :It is the number of particles that are present in 1 mole of substance.

`N_(0) = 6.022* 10^(23)`

So,

`6.022* 10^(23)` atoms = 1 mole carbon

1 atom =

`(1)/(6.022* 10^(23))` mole

1 trillion atom =

`(1)/(6.022* 10^(23))* 10^(12)` mole

`1.660* 10^(-12)` mol

Two significant figure

`1.7* 10^(-12)` moles of carbon