Achemical or physical change that takes in heat from its surroundings is (4 points) an exothermic process an explosion an endothermic process a phase change an explosion

Imagine that you have produced several versions of lactase, each of which differs from normal lactase by a single amino acid. describe a test that could indirectly determine which of the versions significantly alters the three-dimensional shape of the lactase protein.

Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?

What is the molar mass of ca(cio4)2