Why does a rocket have such great momentum even if it is moving at a slow speed?

Momentum of an object is the product of two quantities:

Momentum = (the object's mass) times (the object's speed)

If one of these quantities is small, the momentum can still be large if the other quantity is huge.

A rifle bullet is a great example of this idea.  The bullet has a small mass ... maybe only a few grams ... but it gets shot out of the rifle with such a high speed that when you multiply (mass)x(speed), the bullet has enough momentum to knock a big person down off his feet.

think its the third option

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.