A food product is being frozen in a system with capacity remove 6000 kJ of thermal energy. Assume the product has a specific heat of 3.5 kJ/(kg 8C) above the initial freezing temperature of 228C, a latent heat of fusion of 275 kJ/kg, and a specific heat of 2.8 kJ/(kg 8C) for the frozen product below 258C. Estimate the final temperature of 15 kg of frozen product, if the initial temperature is 208C.

Fugu, also known as puffer fish, is a sushi delicacy that can also be lethal. puffer fish contain a powerful toxin that can kill an adult a few hours after ingestion. sushi chefs who prepare fugu must be specially trained because any contamination of the toxin-free areas of the fish can be deadly. recently this toxin has been put to good use, as scientists have discovered that a purified form of it can treat severe pain in cancer patients. this recent scientific discovery would fall under which area of chemistry? applied biochemistry pure organic chemistry pure physical chemistry applied inorganic chemistry

In the cathode ray tube experiment, j. j. thomson passed an electric current through different gases inside a cathode ray tube in the presence of an electric field. in which two ways did this experiment change scientists’ understanding of the atom?

Consider the story you just read. all but one of the choices below indicate that something is living.