Question

when water is changed into ice it's vilume increases by 9/ .if ice changed into water the percentage decrease in volume is
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Answer 1

Answer:

Hence, Percentage of the decrease in volume is 8.25 % (approx).

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Answer 2

$\sf\huge\bold{Answer:}$

Given :

• Increase in volume when water changes into ice = 9%

To find :

• Decrease in volume when ice changes to water

Solution :

Let volume of water = 100ml.

After solidifying it will = 109 ml.

After melting it will be 100 ml again.

Hence decreasing (109–100) = 9 ml from 109 ml.

Therefore, the decreasing percentage will be

$\tt\ = \frac{9}{109} \times 100\%$

$\tt\ = \frac{900}{109} \%$

$\tt\ = 0.12111...$

$\tt\ ≈0.121$

$\sf\red{ Decrease \: in \: volume \: when \: ice \: changes \: to \: water \: is}$

$\huge\tt\purple{ ≈0.121 \:}$