What is the mass of one mole of #CH_4#?

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Answer 1 · 2017-03-02T20:30:54

Got a Periodic Table?

Of course you have because you are doing your chemistry homework. The atomic mass of #H=1.00794*g#, and the atomic mass of #C=12.011*g*mol^-1#.

#(12.011+4xx1.00794)*g*mol^-1=??*g*mol^-1#.

Answer 2 · 2017-03-02T20:31:48

approximately 16 grams/mole

Find the mass of all the atoms then add up the mass of all the atoms in the molecule.

# 1 xx C = 1 xx 12 = 12#
# 4 xx H = 4 xx 1 = 4#

Adding # 12 + 4 = 16#