Question

The mass of substance is 18.8865 gram and its volume is 7.9cm3.What will be its density considering significant figures and rounding off the density.​

Answer 1

Answer:

2.39

Explanation:

$\sf{density = \frac{mass}{volume}} \\ \\ \bf{let \: density \: be \: d} \\ \\ \bf{ \frac{18.8865}{7.9} = 2.39062...} \\ \\ \bf{it \: will \: have \: 2 \: significant \: figure} \\ \\ bcoz \: of \: smallest \: number \: has \: 2 \: sig.fig \\ \\ so \: 2$

=2.39

Answer 2

Answer:

We have seen how important measurements are to the scientific process. Scientists need to make measurements as accurate as possible in order to draw conclusions from their experiments. In order to avoid errors, however, scientists also need to be clear about how precise their measurements are, or are not, when reporting their data. No measurement tool is perfect, and so every measurement we make with imperfect tools has some amount of uncertainty associated with it.

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