The main purpose of the turbine in the turbojet engine is to
a. compress the air.
b. reduce the temperature of the exhaust gas.
c. increase the velocity of the exhaust gases.
d. drive the compressor.

The best answer is D.

The engine sucks in air at the front. A compressor  squeezes the air.  The compressed air is sprayed with fuel and an electric spark lights the mixture. The burning gases expand and blast through  the nozzle at the back of the engine. As the hot air is going through the nozzle, it passes through another set of blades called the turbine. The turbine is attached to the same shaft as the compressor. As the turbine spins, it also spins the compressor.

the answer to this question is 60 n

the temperature and the pressure affect solubility. temperature affects by changing the properties of the solvent. the increase in pressure increases solubility, the decrease in pressure decreases solubility.