A rectangular block of copper metal weighs 1896 g the dimensions of the block or 8.4 cm 55.5 cm x 4.6 cm from this data what is the density of copper

Air enters a compressor operating at steady state at 1.05 bar, 300 k, with a volumetric flow rate of 93 m3/min and exits at 12 bar, 400 k. heat transfer occurs at a rate of 15.5 kw from the compressor to its surroundings. assuming the ideal gas model for air neglecting kinetic potential energy effects, determine the power in put in kw.

Idon’t quite understand this problem

Explain what happens at the saturation point when adding salt to water at room temperature.