The pressure of a mixture of gases is 855 mmHg. The gases in this mixture have the following partial pressures: CO2 = 0.25 atm, O2 = 0.55 atm, N2 = 0.14 atm. Hy is also present, what will be its partial pressure,
in atmospheres? Round your answer to 2 significant figures.

Which is the solubility product expression for caf2(s)?  [ca2+]/[f–]2  [ca2+][f2–]  [ca]+[f]2  [ca2+][f–]2

How many valence electrons are in atom of radon?

Match the term to its description match term definition chemical energy a) internal energy caused by vibrations of atoms and molecules electrical energy b) electromagnetic energy that travels in waves radiant energy c) the movement of an electrical charge thermal energy d) potential energy stored in the bonds between atoms