Please help! Base your answer on the information below.
The health of fish depends on the amount of oxygen dissolved in the water. A dissolved
oxygen (DO) concentration between 6 parts per million and 8 parts per million is best for
fish health. A DO concentration greater than 1 part per million is necessary for fish
survival.
Fish health is also affected by water temperature and concentrations of dissolved
ammonia, hydrogen sulfide, chloride compounds, and nitrate compounds. Most
freshwater fish thrive in water with a pH between 6.5 and 8.5.
A student's fish tank contains fish, green plants, and 3800 grams of fish-tank water with
2.7 x 10-2 gram of dissolved oxygen. Phenolphthalein tests colorless and bromthymol
blue tests blue in samples of the fish-tank water.
State how an increase in the temperature of the fish-tank water affects the solubility of
oxygen in the water.