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(C) The precision of a result is limited by the least precise measurement. In the given values,$3.929 \ g$ has $4$ significant figures and $4.0 \ g$ h

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$3.9$

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(C) The precision of a result is limited by the least precise measurement. In the given values,$3.929 \ g$ has $4$ significant figures and $4.0 \ g$ has $2$ significant figures. The result should be reported to the same number of significant figures as the least precise measurement,which is $2$. Rounding $3.929$ to $2$ significant figures gives $3.9 \ g$.

$A$ sample was weighed using two different balances. The results were $(I)$ $3.929 \ g$ and $(II)$ $4.0 \ g$. How would the weight of the sample be reported in $g$?

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