Question

पारा का घनत्व 13.6 ग्राम/क्यूबिक से.मी. होने पर 5 लीटर पारे का भार कितना किलोग्राम होगा?​

Answer 1

Given:

The density of mercury = 13.6 g/cc = 13.6 gm per cubic capacity

To find:

The mass of 5 litres of mercury in kilogram

Solution:

We know,

$\boxed{\bold{1 \:Litre = 1000\: cm^3}}$

∴ 5 Litre = 5 × 1000 = 5000 cm³

Now,  according to the question and the formula of density

i.e., $\boxed{density = \frac{mass}{volume} }$, we can say

1 cm³ of Mercury contains 13.6 gm of Mercury

∴ 5000 cm³ of Mercury will contain = 68000 gm of Mercury

Also, $\boxed{\bold{1 \:gm = \frac{1}{1000} \:kg}}$

∴ 68000 gm = $\frac{68000}{1000}\:kg$ = 68 kg

Thus, the mass of 5 litres of Mercury in kilogram is 68 kilogram.

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