Question

8. Find the density of an unknown liquid in a beaker. The beaker's mass is 268 g when there is no
liquid present in it. With the unknown liquid, the total mass is 390 g. The volume of the unknown
liquid is 145 mL.
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Answer 1

Answer:

Mass of liquid: 390-268= 122g

Density= Mass/Volume

Density= 122/145= 0.84g/mL

Ans: Density= 0.84g/mL

Answer 2

Answer:-

Mass of beaker=268g

Total mass=390g

Mass of liquid:-

$\\ \qquad\quad\sf\Rrightarrow 390-268=122g$

• Volume=145mL

$\\ \qquad\quad\sf\Rrightarrow 0.1\ell=0.1cm^3$

Now

$\boxed{\sf Density=\dfrac{Mass}{Volume}}$

$\\ \qquad\quad\sf\Rrightarrow Density=\dfrac{122}{0.1}$

$\\ \qquad\quad\sf\Rrightarrow Density=12.2g/cm^3$