Trina walked into the kitchen and saw that the cake she'd put in the refrigerator the night before was gone. She said to herself "Dad must've eaten the cake when he got
home last night
Trina's statement can be classified as a(n).
A)
observation
B)
conclusion
C)
hypothesis
D)
inference

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.