Hydrogen has 2 naturally occurring isotopes hydrogen -1 and hydrogen-2. what is the symbol for each of these isotopes?

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

Plz ill give u brainliest which of the following steps is not likely to take place during cellular respiration? a.oxygen combines with carbon of simple sugar. b. energy molecule transfers energy to cells. d. energy is used up.

Which type of intermolecular force is pbr3