128.3 grams of methane (CH4) is equal to how many moles of methane

Question

Alexis Dawson

Chemistry

20 January, 20:41

128.3 grams of methane (CH4) is equal to how many moles of methane

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Answers (1)

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Valerie Daniels · Answer 1

About 8.0 moles of methane. Number of moles = MassMolar mass.

And thus we get the quotient:

128.3⋅g16.04⋅g⋅mol-1=8.0⋅moles of methane.

Note that the expression is dimensionally consistent, we wanted an answer in moles, and the quotients gives, 1mol-1=11mol=mol as required.