Elements required for the enzymetic reaction that produces phosphoenolpyruvate

The agent of mechanical weathering in which rock is worn away by the grinding action of other rock particles is call

An object becomes electrically charged when: electrons are created in it electrons from it are destroyed electrons are transferred to it protons from it are destroyed protons are created in it

Assuming complete dissociation of the solute, how many grams of kno3 must be added to 275 ml of water to produce a solution that freezes at -14.5 c? the freezing point for pure water is 0.0 c and k_f is equal to 1.86 c/m