Question

A massa de:
a) 1 mol de H2
b) 3 mol de H2SO4
c) 5 mol de HNO3
d) 10 mol de NaCl
e) 12 mol de H2S

Answer 1

a) massa molar H2 = 2 g/mol

1 mol -------- 2 g
1 mol -------- x g

x = 2 g
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b) massa molar H2SO4 = 98 g/mol

1 mol -------------- 98 g
3 mol ------------- y g

y = 3 . 98

y = 294 g
______________________________

c) Massa molar do HNO3 =  63 g/mol

1 mol ----------- 63 g
5 mol ----------- z g

z = 5 . 63

z = 315 g
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d) massa molar NaCl = 58,5 g/mol

1 mol ------------- 58,5 g
10 mol ---------- w g

w = 58,5 . 10

w = 585 g
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e) Massa molar H2S = 34 g/mol

1 mol ----------- 34 g
12 mol --------- k  g

k = 12 . 34

k = 408 g
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espero ter ajudado!