SOLUTION: the mass of one methane molecule is 2.7 X 10^-23. find the mass of 70,000 molecules of methane and express the answer inn scientific notation

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Question 618826: the mass of one methane molecule is 2.7 X 10^-23. find the mass of 70,000 molecules of methane and express the answer inn scientific notation

Answer by Alan3354(69443) About Me  (Show Source):
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the mass of one methane molecule is 2.7 X 10^-23. find the mass of 70,000 molecules of methane and express the answer inn scientific notation
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= 2.7E-23*7E4
= 18.9E-19 = 1.89E-18
= 1.89%2A10%5E-18
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PS Use * for multiply. x has other uses.