7. If a water sample test shows a pH of 5, by what factor would
the hydronium ion concentration have to increase or
decrease to completely neutralize the sample?
A increase by a factor of 2
B. decrease by a factor 2
C. increase by a factor of 100
D. decrease by a factor of 100

the ozone layer acts as a filter for the shorter wavelength and highly hazardous ultraviolet radiation (uvr) from the sun, protecting life on earth from its potentially harmful effects. when the sky is clear, there is an inverse relationship between stratospheric ozone and solar uvr measured at the earth's surface.

the answer is a and have a great day

56 moles of   lieter in chemistry

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.