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​What is the mass in grams of 10.5 mole CH4? what is the % carbon?

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What is the mass in grams of 10.5 mole CH4? what is the % carbon?

Oct 18th, 2017

16.04 g/mol * 10.5

168.42grams

12/16 x 100 = 75%

Apr 22nd, 2015

Thank you! Is there any way you can show me how you got to this?

Apr 22nd, 2015

1. given moles= 10.5 mole

from the periodic table, molar mass of CH4 is 16.04 g/mol

then, mass OF CH4 = 16.04 g/mol * 10.5=168.42grams


2. percentage carbon= 12/16*100

the mas of carbon= 12

the mass of CH4= 16

To get the percentage............12/16*100=75%

all the best

Apr 22nd, 2015

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