4) what volume (mL) of a 3.1% (by mass) chlorine solution (density= 1.15 g/mL) contains enough...
Enter vour answer in scientific notation Chlorine is used to disinfect swimming pools. The accepted concentration for this purpose is 1 ppm chlorine or l g of chlorine per million g of water. Calculate the volume of a chlorine solution (in milliliters) a homeowner should add to her swimming pool to achieve 1.00 ppm chlorine if the solution contains 6.00 percent chlorine by mass and there are 3.85 x 101 gallons of water in the pool. (l gallon- 3.79 L;...
A swimming pool whose volume is 10,000 gal contains water that is 0.03% chlorine. Starting at t=0, city water containing 0.002% chlorine is pumped into the pool at a rate of 4 gal/min. The pool water flows out at the same rate. What is the percentage of chlorine in the pool after 1 hour? When will the pool water be 0.004% chlorine? What is the percentage of chlorine in the pool after 1 hour? After 1 hour the pool will...
Exercises 11.4 12- What volume of 1.000 M Na2CO3 will react with 342 ml of 0.733 M H3PO4? 3Na2CO3 + 2H3PO4 - 2Na3PO4 + 3H2O + 3CO2 Exercise 11.7-end of chapter material For sanitary reasons, water in pools should be chlorinated to a maximum level of 3.0 ppm. In a typical 5,000 gal pool that contains 21,200 kg of water, what mass of chlorine must be added to obtain this concentration?
A cup of Starbucks brewed coffee contains 15.2% caffeine by mass. What volume of this drink solution in milliliters contains 53.8 g of caffeine? (density of water is 1.00 g / mL). 2. How much caffeine (C8H10N4O2) in grams is contained in a 16 oz cup?
An aqueous NaCl solution contains 1.343x10* ppm NaCl. The density of water is 1.000g/ml. The density of the solution is 1.08 g/mL. The molar mass of NaCl is 58.44g/mol. Keep the correct number of significant figures. a) What is the molality of NaCl? b) What is the molarity of NaCl? c) What is the (mass/volume)% is unit of (kg/L)%? d) What is mass percent? e) What is mole fraction of NaCl?
A solution of water contains 15mg of... A solution is labeled as 7.75% Naa by mass, write this unit as a fraction. Be very thorough in writing this fraction. What are the numbers, units and substance? 4. 7.75% Nad-, 5. A solution is labeled as 7.75 ppm CI by mass. Write this unit as a fraction. Be very thorough in writing this fraction. What are the numbers, units and substance? 7.75 006 7.75 ppm cr = yea! 6. Asolution of...
The concentration of chlorine in pool water is 1.50 ppm. What mass of chlorine is present in 3.78x108 g of water (which is equivalent to 100,000 gallons of water)? Answer in "g Chlorine"
A solution is prepared by mixing 1.15 g of ethanol (CH3CH2OH) with 100. g of water. Calculate: (a) the percent by mass, (b) mole fraction, (c) molality, and (d) molarity of this solution. Assume that the density of the solution is 1.00 g/mL
SUTULUI 4. Calculate the molarity of a 50% sulfuric acid solution by mass. The density of g/mL. 5. How many grams of CO2 are there in a 250.0 mL sample of sea water if the concentration of CO2 is 295 ppm? Assume the density of sea water is 1.03 g/ml.
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...