ICSE Class 9 Answered
A density bottle weighs 30 g when empty and 54 kg when filled with kerosene. Find density of kerosene in C.G.S. Units and its R.D(volume of bottle is 30 ml)
Asked by bosesunayna.123 | 27 Jul, 2020, 15:09: PM
The correct question must be as follows. The question stated above has 54 kg which is to be replaced by 54 g
So the correct question is : -
A density bottle weighs 30 g when empty and 54 g when filled with kerosene. Find density of kerosene in C.G.S. Units and its R.D(volume of bottle is 30 ml)
Solution:-
Mass of bottle when empty is 30 g
Mass of bottle when filled with kerosene is 54 g
Thus of mass of liquid is = 54 g - 30 g = 24 g
Volume of bottle = 30 ml = 30 cm3
density = mass/ volume
Thus,
Density of kerosene = 24/30 = 0.8 g/cm3
Thus, density of kerosene in CGS unit is 0.8 g/cm3
![R e l a t i v e space d e n s i t y space equals space fraction numerator d e n s i t y space o f space s u b s tan c e over denominator d e n s i t y space o f space w a t e r space end fraction
T h u s comma space
R. D. space equals space fraction numerator 0.8 space g divided by c m cubed over denominator 1 space g divided by c m cubed end fraction space equals space 0.8 space](https://images.topperlearning.com/topper/tinymce/cache/1c8fa986b1e3c725eec761067b11182c.png)
Thus, R.D. of kerosene is 0.8
Answered by Shiwani Sawant | 27 Jul, 2020, 18:02: PM
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