Which statement best describes what happens when a person sees a blue ball?
a. human eyes reflect blue light back to the ball.
b. the ball absorbs blue light from human eyes.
c. blue light absorbed by the ball is perceived by human eyes.
d. blue light reflected from the ball enters human eyes.

When 13.3 g koh is dissolved in 102.7 g of water in a coffee-cup calorimeter, the temperature rises from 21.4 °c to 31.53 °c. what is the enthalpy change per gram of koh (j/g) dissolved in the water? * take the density of water as 1.00 g/ml. * assume that the solution has a specific heat capacity of 4.18 j/g*k. enter to 1 decimal place. do not forget the appropriate sign /(+). canvas may auto-delete the (+) sign