How much heat would be needed to completely evaporate 43.5 g of boiling water at a temperature of 100 °c? express your answer in units of joules.

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.

Aknife blade is a(n) a. lever b. screw c. wedge d. inclined plane

How much energy must a refrigerator absorb from 225 g of water so that the temperature of the water will drop from 35°c to 5°c