A density bottle weighs 20.25g when empty, 40.75g when filled with a liquid and 50.25g when filled with water. Find (a) Volume of the bottle ; (b) Density of the liquid.
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Solution
(a) mass of the empty bottle: 25g volume of empty bottle=(mass of bottle filled with water- mass of empty bottle )/density of water volume of empty bottle=(55-25)/(1g/ml)=30ml
(b)density of empty bottle =mass of the empty bottle/ volume of empty bottle =25g/30ml =(5/6)g/ml =0.83g/ml