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Express each answer in scientfic notation in the units indicated....

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Express each answer in scientfic notation in the units indicated. (5.36x10^-1kg)-(7.40x10^-2kg) in grams. 

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`5.36"x"10^(-1)-7.4"x"10^(-2)`

`=.536-.074`

`=.462`

`=4.62"x"10^(-1)`

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`5.36"x"10^(-1)"kg"-7.4"x"10^(-2)"kg"=4.62"x"10^(-1)"kg"`

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