If a sample of hot water and cold water are mixed, energy will flow from the hot water to the cold water. The heat transfer will stop when
the mixture reaches a temperature between the two original temperatures.
True
Or
False

i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)

the answer is   c.) 1575 j.

explanation:

water at room temperature is flowing through a pipe with pressure taps located 10 ft apart along one section of the pipe, which are connected to a mercury (s=13.6) manometer.

it’s previous models   because when i picked that son of a gun’s answer it was wrong look for previous models because they might make it a different letter