2. The air in a room has a mass of 50 kg and a specific heat of 1,000 J/kg*C. What is the change in thermal energy of the air when it warms from 20 to 30 degrees celsius?

Layers of rock containing fossils, like the layers illustrated here, are most likely composed of rocks.

What is the mass defect of a mole of nuclei with 1.8 x 10^15 j/mol binding energy?

Liquid from a brewery fermentation contains 10% ethanol and 90% water. part of the fermentation product (50,000 kg/h) is pumped to a distillation column on the factory site. under current operating conditions, a distillate of 45% ethanol and 55% water is produced from the top of the column at a rate of one-tenth that of the feed. what is the composition of the waste "bottoms" from the still?