Question

How many moles are in 6.7 x 10^25 molecules of H2SO4

Answer 1

`\huge{ \boxed{111.30 \: \: \text{moles}}}`

Step-by-step explanation:

To find the number of moles in a substance given it's number of entities we use the formula

`\bold{n = (N)/(L) \\ }`

where

n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities.

From the question.

N = 6.7 × 10²⁵
`\: H_2SO_4 \:` molecules

`n = \frac{6.7 * {10}^(25) }{6.02 * {10}^(23) } \\ = 111.2956...`

We have the final answer as.

111.30 moles