What proportion of moles is 1 g of hydrogen H2? - вопрос №119890012 от bakinec001p08ngx 01.03.2021 01:14

Question

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bakinec001p08ngx · Answer

given:
m(Н2) = 1 g
find:
ν(Н2) - ?
Solution:
1- way:
М(Н2) =2 g/mol
1 g Н2 х mol Н2
2 g Н2 1 mol Н2
х= (1 g • 1 mol)/2g =1 mol
2- way:
М(Н2) = 2 g/mol
ν=m/М ;ν(Н₂) =(m(Н₂))/(М(Н₂)) = (1 g)/(2 g/mol) = 0,5 mol.
Answer: ν(Н2) = 0,5 mol.