Two clear solutions are placed in separate beakers. The first solution has a pH of 4, and the pH of the second solution is unknown. If the two solutions are mixed and the resulting pH is 5, the second solution must have

Convert a pressure of 0.0248 mm Hg to the equivalent pressure in pascals (Pa). How did you get your answer?

Increasing the concentration of a reactant speeds up a reaction. True False

The solubility of solids in water: The solubility of solids in water: decreases with increasing temperature. increases with increasing temperature. is independent of the temperature. Solids are not soluble in water. none of the above

Which of the following elements is the most reactive? A. At B. Cl C. Br D. I How can you tell if it's reactive? What do you look at?

Which one has the greatest radius? Li or K Why?

How much ice at a temperature of - 17.5 ∘C must be dropped into the water so that the final temperature of the system will be 31.0 ∘C?

Why does a gas fill completely the vessel in which it is kept?

Individuals who work full time and those who work part-time enjoy basically the same number of paid leave benefits. True False

There is a large increase in ionization energy between the second and the third ionization energies of a metal. What kind of ion is the metal likely to form? Include the charge in your answer.

Which of the following are true statements about equilibrium systems? For the following reaction at equilibrium: CaCO3 (s) ⇌ CaO (s) + CO2 (g) adding more CaCO3 will shift the equilibrium to the right.