sofia467735
27.09.2019 •
Chemistry
What is the total mass of 3.01 x 10^23 atoms of helium gas?
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Ответ:
2 g
Explanation;Moles of atom = atoms / 6.022 × 10^23
Therefore; number of moles;
=(3.01 ×10^23) / (6.022 × 10^23)
= 0.5 moles
But;
Mass = moles of atom × Molar Mass of Helium
Thus total mass of helium:
= 0.5 × 4
= 2 g
Ответ: