Which of these is a characteristic of index fossils? (7 points) Found in the topmost rock layer
Found in many layers of the same rock
Have already established relative age
Are limited to a particular geographic location

Using a value of ksp = 1.8 x 10-2 for the reaction pbcl2 pb+2(aq) + 2cl -(aq). if the value of ksp was determined to be only 1.2 x 10-2: too much solid has dissolved. additional precipitate is forming. the solution is unsaturated. the ions are now combining to reduce their concentrations.

What happens when the temperature of a solution increases?

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.