Question

calculate no. of moles in 6.022x10^25 particles of helium.​

Answer 1

6.022×10²³ particles ---> 1 mole

So, 6.022×10²⁵ particles gives

$= \frac{1}{ {6.022 \times 10}^{23} } \times {6.022 \times 10}^{25} \\ = \frac{ {6.022 \times 10}^{25} }{ {6.022 \times 10}^{23} } \\ = {10}^{25 - 23} \\ = {10}^{2} \: moles$

Therefore the answer is 100 moles.