Question

A substance having density 1200.0 g/cm3, occupies
a volume 1.00 cm3. The mass of the substance with
correct significant figures is
(1) 1200.0 g
(2) 1.200 x 103 g
(3) 1200 g
(4) 1.20 x 103 g​

Answer 1

Explanation:

mass=density ×volume

M=1200×1

M=1200

M=1.2 × 10^3

Answer 2

The mass of the substance is $m=1.2\times 10^3\ g$

Explanation:

Given that,

Density of the substance, $d=1200\ g/cm^3$

Volume, $V=1\ cm^3$

Let m is the mass of the substance. It can be calculated using the concept of density. It is given by :

$d=\dfrac{m}{V}$

$m=d\times V$

$m=1200\times 1$

$m=1200\ g$

In significant figures,

$m=1.2\times 10^3\ g$

So, the correct option is (d).

Learn more :

Topic : Density

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