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10-05-2018
Chemistry

contestada

What is the mass of 18.8 moles of helium atoms?

Respuesta :

ErienaRyu ErienaRyu

22-05-2018

18.8 mol= mass of He X atomic mass
18.8 mol= mass of He X 4 g mol^-1
mass of He= (18.8 X 4)g = 75.2 g

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