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Chemistry, 26.02.2021 18:20 brinson1k

How many moles are in 4.21 x 10^20 atoms of He? OA) 2.53 x 1044 mol
O B) 25.3 mol
O C) 6.99 x 10-4 mol
OD) 1.69 x 1021 mol

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How many moles are in 4.21 x 10^20 atoms of He? OA) 2.53 x 1044 mol
O B) 25.3 mol
O C)...

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