A photon has a frequency of 2.9 ~ 10-16 Hz. Planck's constant is 6.63 x 10-34 Jos. The energy of the photon, to the nearest tenths place, is
10-49 J.

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?

Answer explain why it is not possible to deduce a complete order of reactivity.

Does the number of ions in solution increase, decrease, or remain constant? it continuously decreases. it continuously increases. it decreases at first, then increases. it increases at first, then decreases.