What is the freezing point of a solution of 1.5m aqueous solution of potassium bromide (KBr)? The freezing point depression constant of water is 1.86°C/m. Assume 100% dissociation.

What is the molar mass of a gas that has density of 2.054 g/l

Select all that apply. using a value of ksp = 1.8 x 10-2 for the reaction pbcl2 (s) pb+2(aq) + 2cl -(aq). the concentration of the products yield a ksp of 2.1 x 10-2:

Which statement is true about a catalyst? a: a catalyst decreases the rate of the reaction. b. a catalyst is consumed during a chemical reaction. c. a catalyst lowers the activation energy of a reaction. d. a catalyst increases the reactant concentration during a reaction.