What is the molarity of a potassium chloride solution that has a volume of
400.0 ml and contains 85.00 grams
KCI?
What mass of KBr is present in 25 ml of
a 0.85 M solution of potassium chloride?

9. write the chemical equation for the following word equations. include symbols for physical states in the equation. a. solid zinc sulfide + oxygen gas -> solid zinc oxide + sulfur dioxide gas b. aqueous hydrochloric acid + aqueous barium hydroxide -> aqueous barium chloride + water

If the concentration of phosphate in the cytosol is 2.0 mm and the concentration of phosphate in the surrounding fluid is 0.1 mm, how could the cell increase the concentration of phosphate in the cytosol? a) passive transportb) diffusionc) active transportd) osmosise) facilitated diffusion

Describe at least two advantages and two disadvantages of using hydropower as a source of energy.