Chemistry

determine the location of the non significant zeros by rewriting the number and placing a bar over the zeroes that are not significant.

1. 8040

2. 4.2 x 10^5

3. 4.70 x 10^-6

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  1. We can't place bars over anything.
    #2 has no zeros but I guess you could rewrite it as 42ssss and all of the zeros (represented by s) are non-significant zeros.
    I would rewrite 1 as 8.04sE3 where s stands for the non-significant zero.
    #3 can be written as 0.00000470 or s.sssss470. The trailing zero is the only significant one.

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    posted by DrBob222

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