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Ideal Gas Equation

The relative ...

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The relative density of pure gold is 19.3. When an ornament made of gold is immersed completely in water, the volume of the water displaced is 5 ml. If the mass of the ornament in air is 100 g, determinewhether the ornament is made of pure gold.

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Q. A jeweller claims that he sells ornaments made of pure gold that has the relative density of 19.3. He sold a bangle weighing 25.25 gf to a person. The clever customer weighs that bangle when immersed in pure water and finds that it weighs 23.075 gf in water. Is the ornament made by pure gold?

Q. A jeweller claims that he makes the ornament of pure gold that has a relative density of

19.3

. He sells a bangle weighing

25.25 g f

to a person. The clever customer weighs the bangle when immersed in water and finds that it weighs

23.075 g f

in water. With the help of suitable calculations find out whether the ornament is made of pure gold or not.

Q. A goldsmith desires to test the purity of a gold ornament suspected to the mixed with copper. The ornament weights

0.25 k g

in air and is observe to displace

0.015

litre of water when immersed in it. Densities of gold and copper with respect to water are, respectively,

19.3

8.9

. The approximate percentage of copper in the ornament is

Q. A jeweler claims that he makes ornament of pure gold of relative density

19.3

. He sells a bangle weighing

25.25

gf to a person. The clever customer weighs the bangle when immersed in water and finds that it weighs

23.075

gf in water.With the help of suitable calculations find out whether the ornament is made of pure gold or not.
[HINT: calculate R.D. of material of bangle which comes out to be

11.6

Weight of ornament in air is 50g and in water is 46g. Relative densities are as follow: - Au - 12 and Cu - 9. Find out the amlunt of gold in ornament

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