1. A drum holds 20 kg of water or 13.2 kg of gasoline. Determine for the gasolin

Question

1. A drum holds 20 kg of water or 13.2 kg of gasoline. Determine for the gasoline (a). specific gravity (b) mass density (c) weight density.

2. An irregular gold nugget is found but no balanace is available to determine its mass. Water is poured into a graduated cylinder and when the nugget is dropped into the water the reading increase by 3.75 cubic centimeter. What is the mass of the nugget?

3. An electric tin plating process gives a tin coating that is 7.5 -5 cm thick. How large an area can be coated in this way by use if 1 kg of tin.

4. a certain calibrated flask weighs 25 g when empty, 75 g when filled with water, and 88 g when filled with glycerin. Find the sp gravity, mass density and weight density of glycerin.

Explanation / Answer

1. 20kg water occupies 0.02m^3 of volume Hence density of gasoline = 660kg/m^3 Specific density = 0.66 Weight density = 6468N/m^3 2. Mass of nugget mass of displaced liquid = 3.75g 3. Density of tin is not provided 4. Specific Gravity = (88-25)/50 = 1.26 mass density = 1260kg/m^3 Weight Density = 12348N/m^3

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