walt made a study chart listing uses for two types of electromagnetic waves.
which headings best complete the chart?
(a.)a: infrared waves
b: x-rays
(b.)a: microwaves
b: ultraviolet waves
(c.)a: ultraviolet waves
b: gamma rays
(d.)a: x-rays
b: radio waves

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.