Calcium carbonate is a weakly soluble salt in water whose Ksp is 3.4 x 10^-9 M^2. Consider the following questions regarding the solubility of Calcium carbonate

A. What is the solubility, in grams per liter, of calcium carbonate in pure water?

B. if the solution were prepared in a 0.00625 M calcium nitrate, how much calcium carbonate would dissolve per liter?

C. Consider the following stresses on the system, predict which direction the equilibrium will shift.
1. 0.1 0M hydrochloric acid is added to the solution
2. Lead (II) nitrate solution is added to the solution
3. solid sodium carbonate is added to the solution
4. Pure water is added to the solution
5. some calcium carbonate solid is removed from the solution

D. If 0.00625 M calcium nitrate is mixed with 0.0100M sodium carbonate. Determine the magnitude of QSP and predict whether the mixture will precipitate calcium carbonate or not. If it will precipitate what mass will be produced? If not, what molarity of calcium nitrate is required to reach KSP?

The earth's moon is unusually large. two popular theories of the moon's origin include the "sister world" hypothesis, which states that the moon formed from the same materials as the earth, near enough to the earth that they fell into orbit around each other. a second theory is the "capture" hypothesis, in which the moon formed elsewhere in the solar system, and the earth's gravity pulled it into its orbit. studies of what the moon is made of indicate that some of its materials had to come from the earth or from the same area of the solar system where the earth had formed. at the same time, the moon does not contain much of the material that makes up the earth's core, so the moon could not have formed from the same materials as the earth. how do the two facts above affect the described theories of the moon's origin? a. they show that scientists will never agree on where the moon came from. b. they show that more experiments on moon formation need to be done. c. they show that no theory accounts for the existence of the moon. d. they show that neither theory is complete and entirely correct.

Which of the following are sources of revenue for media companies? a. direct sales to producers b.advertising and subscriptions c. online purchase d. capital investments

What is formed when amino acids form long chains or polymerize