Which best describes thermal energy? A. It is the difference between internal energies of two or more substances.

B. It is the sum of internal energies of two or more substances.

C. It is the portion of internal energy that can be transferred from one substance to another.

D. It is the portion of potential energy that can be transferred from one substance to another.

Which of the following is true for the actual yield of a reaction? it is always calculated as a ratio. it is the yield from the excess reactant. it is the yield from the limiting reactant. it is always less than the theoretical yield.

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

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?