These graphs show the amount of lead in the air and the amount of violent crime over several decades. What can you conclude based on the data?
- The violent crime rate is higher when the lead level is higher
- violent crime rates and levels appear to be unrelated.

- the rate of violent crime is lower when the lead level is higher

the violent crime rate is higher when the lead level is higher

Explanation:

ap3x

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.

it means there are 3 atoms of oxygen