Ascientist wants to test how much of a base can be added to a solution before the ph of the solution changes to above a certain point. the starting ph of the solution is 7.0, and the scientist wants to know when the ph of the solution changes to above 8.0.which ph indicator should the scientist use? a. methyl yellow, which changes from yellow to red around a ph of 4.0 b. congo red, which changes from red to violet around a ph of 5.0 c. alizarin yellow r, which changes from yellow to red around a ph of 10.2 d. phenolphthalein, which changes from colorless to purple around a ph of 8.3

How do temperature and salinity affect deepwater currents? they create changes in wind direction, moving denser water in the same direction as the wind and causing the deepwater circulation patterns found in the ocean. as temperatures and salinity levels of water increase, the water rises to the surface where it creates currents as it moves to colder regions. they create density differences that cause dense deepwater currents to flow toward the equator where they displace less dense, warmer water above them. they equalize the forces on undersea currents caused by the coriolis effect as they replace more dense water with less dense water.