Question

calcula la composición centesimal del nitrato de sodio NaNO3...ayuda porfa

Answer 1

Mm NaNO3

Na: 1 x 23 = 23 g/mol
 N:  1 x 14 = 14 g/mo
 O:  3 x 16 = 48 g/mol
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           Mm = 85 g/mol

Na:
85 g ------  100 %
23 g -------  x

x = 27.05 %

N:
85 g ---- 100 %
14 g -----  x
x = 16.47 %

O:
85 g ---- 100 %
48 g -----  x
x = 56.47 %