Question

How many carbon atoms are present in 3.900 x 10-4 mol of carbon? Give your answer in scientific notation. x 10 (select) A

Answer 1

Answer: The number of atoms of carbon present in given number of moles are
`2.350* 10^(20)`

Step-by-step explanation:

We are given:

Number of moles of carbon =
`3.900* 10^(-4)mol`

According to mole concept:

1 mole of an element contains
`6.022* 10^(23)` number of atoms.

So,
`3.900* 10^(-4)mol` of carbon will contain =
`3.900* 10^(-4)* 6.022* 10^(23)=2.350* 10^(20)` number of atoms.

Hence, the number of atoms of carbon present in given number of moles are
`2.350* 10^(20)`