Which ph change represents a hundredfold increase in the concentration of h3o+?
(1) ph 5 to ph 7 (3) ph 3 to ph 1(2) ph 13 to ph 14 (4) ph 4 to ph 3

Nonpoint source pollution is difficult to control because it

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?