By increasing the length of heat exchanger, how the outlet temperature of both cold and hot stream changes?
a- hot stream temperature increases and cold stream temperature decreases
b- cold stream temperature increases and hot stream temperature decreases
c- both cold stream and hot stream temperature increases

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '

In an investigation that uses the scientific method, which step immediately follows making a hypothesis? o summarizing the results o asking a question o making observations designing an experiment mark this and retum save and exit next submit

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?