Monday, November 16, 2009

How many moles of carbon-12 are contained in exactly 6grams of carbon-12?

a) 0.5 mole


b) 2.0 moles


c) 3.01 x 10^23 moles


d)6.02 x 10^23 moles





explain please

How many moles of carbon-12 are contained in exactly 6grams of carbon-12?
a)


1 mole is the weight in grams equal to the molecular weight of the substance. Obviously, 6g of C12 is ½ mole.........
Reply:since one mole of carbon equals 12 grams (using the periodic table), then 0.5 moles of carbon would have to equal 6 grams. nothing complicated

camellia

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