1.the student measures the mass of a piece of metal. its mass is 146g. (a) the volume of the piece of metal is 20cmcube. calculate the density of the metal .
(b) state the unit.

Which are advantages of renewable resources? check all that apply. renewable energy supplies are completely reliable everywhere. some renewable resources will never be used up. little or no waste is produced by renewable resource plants. electricity can be generated in large quantities. many renewable energy facilities have lower operating costs.