Question: Express mass density in kg/m3 and weight density in lb/ft3. 1. Find the mass density of a chunk of rock of mass 215 g that

Express mass density in kg/m3 and weight density in lb/ft3.
1. Find the mass density of a chunk of rock of mass 215 g that displaces a volume of 75.0 cm3 of water.
2. A block of wood is 55.9 in. x 71.1 in. x 25.4 in. and weighs 1810 lb. Find its weight density.
3. If a block of wood of the size in Problem 2 has a weight density of 30.0 lb/ft3, what does it weigh?

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