Question

Calculate the mass of 0·5 moles of helium gas. (Atomic mass of He = 4u)

Answer 1

Mass of helium gas is 2

Answer 2

Moles= given mass / molar mass

Here we have to find given mass.

Thus,

Given mass = moles × molar mass

= 0.5×4

=2

Hope it helps you

Pls mark it as the brainliest