Respuesta :
The mass, in grams, of the sample of methanol is 64 grams.
What is relation between mass and moles?
Mass of any substance will be calculated by using their moles as:
n = W/M, where
W = required mass
M = molar mass = 32.0 g/mol
n = moles = 2 moles
Now we put all these value on the above equation to calculate the mass of methanol as:
W = (2mol)(32g/mol)
W = 64g
Hence, correct option is (4) i.e. 64 grams.
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