What is kelvin’s job title? kelvin works with special software to create maps and graphs. his work requires him to enter data such as coordinate systems, longitude, latitude, elevation etc. he often meets local government officials as part of his work. kelvin is a by profession.

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.

the formula mass of a molecule or a compound is the sum of the atomic weights of the atoms in its empirical formula

(that's what i know about formula mass)

it's c (engineer's do their work with mechanical stuff not on any living being)