Question

An empty bottle weighs 20 grams and 60 grams when filled completely with water.What would the bottle weigh when filled completely with mercury.
[pw=1.0gcm^-3,pm=1.6gcm^-3]
pm=1.6gcm^-3
nonsense

V = 40 cm^3

so mass = 20 + 40 * density of Hg which is not 1.6 g/cm^3
84grams

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