Add cold metal pellets to room temperature water in a calorimeter. Is the heat moving from the metal to the water or the water to the metal?

answer; i believe that the correct answer is (a); a large rock being weathered by wind and rain;

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 would be d. henry moseley

hope this !

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