Hallamos el peso molecular del CH4:
PM (CH4) = 12x1 + 1x4
PM (CH4) = 16 g
Planteamos con regla de tres:
1 mol de CH4 ------ 16 g
"x" mol de CH4 ------ 780 g
x = (780*1)/16
x = 48,75 moles de CH4
Convertir a moléculas:
1 mol de CH4 ------------- 6 x 10²³ moléculas
48,75 mol de CH4 -------"X"
X = 48,75 x 6 x 10²³
X = 292,5 x 10²³ = 2,9 x 10²⁵ moléculas
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Verified answer
Hallamos el peso molecular del CH4:
PM (CH4) = 12x1 + 1x4
PM (CH4) = 16 g
Planteamos con regla de tres:
1 mol de CH4 ------ 16 g
"x" mol de CH4 ------ 780 g
x = (780*1)/16
x = 48,75 moles de CH4
Convertir a moléculas:
1 mol de CH4 ------------- 6 x 10²³ moléculas
48,75 mol de CH4 -------"X"
X = 48,75 x 6 x 10²³
X = 292,5 x 10²³ = 2,9 x 10²⁵ moléculas