How many grams of lead are in a swimming pool containing 9.0 ppb lead in 76 m3 of water? Molarity of lead in a 9.0 ppb solution is 4.3 x 10^-8.
How many grams of lead are in a swimming pool containing 9.0 ppb lead in 76...
1) The maximum allowable concentration of lead in drinking water is 9.0 ppb. (a) Calculate the molarity of lead in a 9.0-ppb solution. What assumption did you have tomake in your calculation? (b) How many grams of lead are in a swimming pool containing 9.0 ppb lead in 60 m3 of water?
7.2.6 A swimming pool has a volume of 50 m. A mass C (in kg) of chlorine is dissolved in the pool water. Starting at a time 0, water containing a con- centration of 0.1 C/V chlorine is pumped into the swimming pool at a rate of 0.02 m3/min, and the water flows out at the same rate. a) Present the differential equation for the chlorine mass O). b) Find the solution O(t) to this equation. c) What is the...
The chlorine solution you pour into the water in a swimming pool breaks down into many different chemicals, the important ones being hypochlorous acid (HOCl) and its conjugate base, the hypochlorite ion (OCl- ). (Ka hypochlorous acid = 3.0 x 10-8 ). A. what is the pKa of the acid? B. The ideal pH for the pool is 7.4. What is the ratio of OCL- to HOCl needed to maintain the swimming pool at a pH of 7.4? C. what...
to freeze the water in this pool? 8. A 10-lane Olympic-sized swimming pool contains 2.5 X 100 kg of water. If the water is at 0°C, how many kilojoules energy must be removed to freeze the water AH fus for H2O = 334 J/g (A) 7.5 X 103 kJ (B) 8.4 X 10% kJ (C) 7.5 X 106 kJ (D) 8.4 X 108 kJ
QUESTION 10 1 points Save Answer How many grams of lead (II) chloride would dissolve in 100 mL of water? The Ksp for lead (II) chloride is 2.4 x 10-4 and the molar mass is 278.1 g/mol. ОА. 1.4 x 10-4 g OB. 10.9 g OC.1.1 g OD. 0.039 g O E.4.3 g
How many gallons of water are wasted each time a swimming pool with a length of 12.5 ft, a width of 6.8 ft and an average depth of 5.4 feet is drained?
A container has 900.0 mL of an aqueous solution containing Cl– ions. How many grams of Cl– ions are in the solution if the molarity is 0.395 M? ____g
How many grams of CH_4N_2O are dissolved in a solution containing 150 grams of water which freezes at - 2.07 degree C? (k_f H_2O = -1.86 degree C/m)
(1 point) A circular swimming pool has a diameter of 10 m. The circular side of the pool is 3 m high, and the depth of the water is 2.5 m. (The acceleration due to gravity is 9.8 m/s2 and the density of water is 1000 kg/m3.) How much work (in Joules) is required to: (a) pump all of the water over the side? 3367394.611 (b) pump all of the water out of an outlet 1 m over the side?
Water in a jar contains 250. ppm lead. How many grams of lead will be taken by a person who drinks 200. mL of water from the jar? Assume density of water to be 1.00 g/mL.