PLEASE HELP ASAP Which letter represents the moles of a formula in the reaction?

C

E

D

A

B

You are making a solution of calcium chloride dissolved in water. you add solid, stir, and it dissolves. you add just a spatula tip full, stir, and the solid does not dissolve. how could you describe the solutions before and after adding the spatula tip amount

When would a bouncy ball have the most potential energy

What term describes technology that operates on an atomic level