Question

i).Calculate the number of moles for the following:-

b).12.044 X 1023 number of He atoms
Full Explaination​

Answer 1

Answer:

For Helium,

Number of atoms=Number of moles

×6.022×10^23

No of Moles = 12.044×10^23/6.022×10^23

= 2.

Now, atomic mass of He=4

Weight = 2×4 = 8 g