Barium chloride is sometimes used in fireworks to give a bright green color. Using the equation below, calculate the change in enthalpy, increment H when 15.00 g of BaCl2 precipitates. Report your final answer in kJ.

BaCl2 ---> Ba2+ + 2Cl-

Why is the vapor pressure of a warm lake higher than the vapor pressure of a cold lake? o a. warm water has a greater heat of vaporization. ob. warm water evaporates more quickly. cool water evaporates more quickly. od. cool water has a greater heat of vaporization.

If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons