(a) Calculatethe concentration of mercury: (i)in g/L (microgram per liter), and (ii) in mol/L.(b)If the lake has surface area of 1.3km2and an average depth of 16m, how many kilograms of mercury are present in the lake?

(SHOW CALCULATIONS) The Environmental Protection Agency sets limits for fluoride in drinking water at 4.0 ppm by mass. Find this concentration in Molarity. (molar mass of fluoride = 18.998 g/mol; assume density = 1.00 g/mL).

How many grams of HCl(s) are there in 300 mL of 4.50% w/v HCl(aq) solution?

At what temperature will the water in a car radiator boil if 500 mL of diethylene glycol (MM 106) is added to 1.00 L of water (density = 1.00 g / mL)? The density of diethylene glycol is 1.118 g / mL. (Kb = 0.512 ° C / m) a) Mention the colligative property that applies in this problem. b) Write the formula that applies to the colligative property in part (a). c) From the formula written in part (b), what is the concentration that is related to this colligative property? d) Name the solute ________________ and the solvent _______________. e) Carry out the corresponding calculation.

Sometimes doctors administer an IV solution containing a solution of dextrose to a patient who has low sugar and high sodium in the bloodstream. Dextrose, formula C6H12O6 is a type of sugar. The IV solution contains 150g of dextrose in 3L of solution. What is the concentration, in terms of molarity, of this solution? Show all workings.