You dissolve 609.4 g (120 g/mol) of NaHSO4 in a swimming pool that contains 457,926 L of water at 25°C. What is the sodium ion concentration in parts per million? Assume the density of the solution is 1 g/mL two sig figs
You dissolve 609.4 g (120 g/mol) of NaHSO4 in a swimming pool that contains 457,926 L...
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;...
4) what volume (mL) of a 3.1% (by mass) chlorine solution (density= 1.15 g/mL) contains enough chlorine to raise the chlorine concentration of a 27000 gal swimming pool to 2.5 ppm (by mass). Assume a density of 1.00 g/mL for the pool water. (4 pts)
A 5.9957 g sample of Na, CrO, (MW = 161.97 g/mol) is dissolved in 1000.0 mL of water. Assume the solution has a density of 1.00 g/mL What is the concentration of Na* (MW = 22.9898 g/mol) in the solution in units of molarity (M)? concentration: М What is the concentration of Na+ in the solution in units of parts per thousand (ppt)? concentration: ppt A 50.0 mL aliquot of the solution is then diluted to a final volume of...
A 5.0067 g sample of Na2CrO4 (MW = 161.97 g/mol) is dissolved in 250.0 mL of water. Assume the solution has a density of 1.00 g/mL. A 50.0 mL aliquot of the solution is then diluted to a final volume of 250.0 mL. What is the concentration of Na+ in the diluted solution in units of parts per million (ppm)?
A chemist dissolve a 13.4 g sample of KOH in 115.0 grams of water in a coffee cup calorimeter. When she did so, the water temperature increased by 23.8 °C. How much heat energy was required to dissolve the sample of KOH? Calculate the heat of solution in kJ/mol. Assume the specific heat of the solution is 4.184 J/g ·°C. please help with work shown. sci notation and correct sig figs as well
4. Silver chloride is a relatively insoluble salt. Only 1.92 mg of AgCl will dissolve per liter of water at 25°C. How many parts per million of Agt can be present in water at 25°C? Assume the density of the solution equals the density of water, 1.00 g/mL. a. 0.52 ppm b. 0.93 ppm c. 1.92 ppm d. 9.30 ppm e. 52.0 ppm
4. Silver chloride is a relatively insoluble salt. Only 1.92 mg of AgCl will dissolve per liter of water at 25°C. How many parts per million of Agt can be present in water at 25°C? Assume the density of the solution equals the density of water, 1.00 g/mL. a. 0.52 ppm b. 0.93 ppm c. 1.92 ppm d. 9.30 ppm e. 52.0 ppm
10. How many grams of NHs will dissolve in 0.10 L of solution when its partial pressure is 7.6 torr? (h-58 m Calculate the mole fraction of NaCI in a solution that is prepared by dissolving 20.0 g NaCI in atm 11. 90.0 g of H20. 12. Calculate the parts per million of a solution made by dissolving 0.340 g of NH, in 2.00 x 10 mL of water (MMNH3-17.04 mol, di 20 = 1.00 mL).
The smell often associated with public swimming pools comes from chloramines. The reaction of hypochlorous acid with ammonia from human urine will produce monochloramine (NH2Cl) as follows: HOCl(aq) + NH3(aq) ⇌ NH2Cl(aq) + H2O(l) Keq = 1.47 x 1011 One part per million (ppm) is a mg L–1. A typical public swimming pool volume (750,000 L) contains 75.0 L of urine. The concentration of ammonia in 1 L of urine is 0.200 M. If the concentration of hypochlorous acid in...
Part B: A chemist prepares a solution by adding 415 mg of CoCl2 (MW = 129.84 g/mol ) to a volumetric flask, and then adding water until the total volume of the contents of the flask reaches the calibration line that indicates 100 mL. Determine the molarity of the prepared solution. (moles per litre, 3 sig figs) Part C: Determine the mass of chloride (MW = 35.45 g/mol ) in grams present in 100 mL of a 0.166 M solution...