What is the mass (in grams) of 9.09x10^24 molecules of methanol (ch3oh)?

and

how many moles of n are in 0.183g of n2o?

The amount of a substance can be converted into grams of that substance by using the molar mass. It is a physical property of a substance which describes the mass per mole of the substance. The molar mass of CH3OH is 32.04 g/ mol. Multiplying the given amount of CH3OH with the molar mass will yield to the mass of the substance.

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