starfish22 starfish22

26-05-2016
Chemistry

Answered

list the following from greatest to least mass: 1 mol of H2, 2 moles of K, 3 moles of Mg, and 4 moles of He

Verified Answer :

Willchemistry Willchemistry

31-05-2016

H₂ = 2 g/mol

1 x 2 = 2 g of H₂
________________________

K = 39.09 g/mol

2 x 39.09 = 78.18 g of K
________________________________

Mg = 24.3 g/mol

3 x 24.3 = 72.9 g of Mg
_________________________________

He = 4 g/mol

4 x 4 = 16 g of He
___________________________________

Order : K , Mg , He and H₂

hope this helps!

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