What is added to balance hydrogen and oxygen atoms in an oxidation- reduction reaction in acidic solution?
A. OH and H20
B. Ht and H20
C. Ht and OH
D. H20

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

0.09 moles of sodium sulfate in 12 ml of solution

Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?