Question

Quantos mol estão presentes em 60g de...
a) NaCL
b) HF
c) Na20
d) CO
pfv é pra amanhã

Answer 1

a) massa molar NaCl = 23 + 35,5 => 58,5 g/mol

1 mol ----------- 58,5 g
n mol ------------ 60 g

n = 60 / 58,5

n = 1,02 mols
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b) HF = 1 + 19 = 20 g/mol 

1 mol ------------- 20 g
n mol ------------- 60 g

n = 60 / 20

n = 3,0 mols
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c) Na2O = 23 x 2 + 16 => 62 g/mol

1 mol --------------- 62 g
n mol ---------------- 60 g

n = 60 / 62

n = 0,967 mols
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d) CO = 12 + 16 => 28 g/mol

1 mol --------------- 28 g
n mol -------------- 60 g

n = 60 / 28

n = 2,14 mols
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