3na atoms helium calculate the mass in gram
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1 mole of He contains 6.023×10^23 atoms.
1 mole of He = 4 gm of He.
So, 20 gm of He contains — (20÷4)×6.023×10^23 atoms = 3.011×10^24 He atoms.
Cheers!!!
1 mole of He = 4 gm of He.
So, 20 gm of He contains — (20÷4)×6.023×10^23 atoms = 3.011×10^24 He atoms.
Cheers!!!
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