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If the density of a solution is 3.12 "g ...

If the density of a solution is `3.12 "g mL"^(-1)`, the mass of 1.5 mL solution in significant figures is

A

`4.7` g

B

`4680 xx 10^(-2) g`

C

`4.680`

D

`46.80g`

Text Solution

Verified by Experts

The correct Answer is:
A
Given that ,density of solution `3.12 g mL^(-1)`
Volume of solution 3.12 g ` mL^(-1)`
For a solution, Mass = volume `xx` density
` = 1.5 mL xx 3.12 g mL^(-1) = 4.68 g `
The digit 1.5 has only two significant figures, so the answer must also be limited to two significant figures. So, it is rounded off to reduce the number of significant figures. Hence, the answer is reported as 4.7 g
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