Question

calculate the no. of moles in 12g of helium​

Answer 1

Answer:

Molar mass of He= 4

No of moles in 12g of He =

$\frac{12}{4} \\ \\ = 3 \: moles$

Answer 2

Answer:

3 moles

Explanation:

molar mass of helium=4g

No.of moles = given mass / molar mass

= 12g/4g

= 3