Question

calculate the number of moles present In 18×0.44×10²² number of helium atoms​

Answer 1

For Helium,

Number of atoms=Number of moles ×6.022×1023

No of Moles = 6.022×102312.044×1023 = 2.

Now, atomic mass of He=4

Weight = 2×4 = 8 g