Sea water containing 4 wt.% salt (NaCl) is passed through a reverse osmosis (RO) membrane filtration unit to produce a "fresh" water product containing 0.5 wt.% NaCl and a concentrated brine waste stream. If there are 28 kg of fresh water recovered from every 100 kg of sea water, then determine the concentration of the brine waste stream. Type your answer in as a weight percentage rounded off to one decimal place, but do not include the 6 symbol.

Sea water containing 4 wt.% salt (NaCl) is passed through a reverse osmosis (RO) membrane filtration unit to produce a "fresh" water product containing 0.5 wt.% NaCl and a concentrated brine waste stream. If there are 28 kg of fresh water recovered from every 100 kg of sea water, then determine the concentration of the brine waste stream. Type your answer in as a weight percentage rounded off to one decimal place, but do not include the 6 symbol.

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter1: Basic Concepts Of Chemistry

Section: Chapter Questions

Problem 49RGQ: Fluoridation of city water supplies has been practiced in the United States for several decades. It...

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A spent 1.0 percent caustic soda solution (ρNaOH = 8.42 lb/gal) with a volumetric flow rate of 3.0gpm is to be neutralized using either sulfuric acid or hydrochloric acid. First, determine the massflow rate (lb/day) of NaOH in the spent caustic soda solution, and then use that value todetermine the stoichiometric amounts (lb/day) of:1. H2SO4 required for neutralizing the OH− ions contributed by the spent caustic soda.[Hints: (1) write the balanced chemical equation for the acid-base reaction betweenNaOH and H2SO4, and use it to establish the stoichiometric weight ratio H2SO4 : NaOH.]2. HCl required for neutralizing the OH− ions contributed by the spent caustic soda. [Hints:(1) write the balanced chemical equation for the acid-base reaction between NaOH andHCl and use it to establish the stoichiometric weight ratio HCl : NaOH.]
A brine solution of salt flows at a constant rate of 4 L/min into a large tank that initially held 5 L of pure water. The solution inside the tank is kept well stirred and flows out of the tank at a rate of 2 L/min. If the concentration of salt in the brine entering the tank is 0.1 kg/L, determine (a) the mass and (b) the concentration of salt in the tank after 30 mins.
A tank contains 1,143 L of brine with 15kg of dissolved salt. Pure water enters the tank at a rate of 10L/min. The solution is kept thoroughly mixed and drains from the tank at the same rate. How much salt is in the tank after 20 minutes?
1. At 60°F, an aqueous solution that is 62.18% wt/wt sulfuric acid (H₂SO4) is 50.00° with respect to the Baumée scale. If this solution contains 150 g of sulfuric acid and the balance water, calculate or determine the following: Express all answers in two (2) decimal places. volume (L) of the solution containing this amount of sulfuric acid ▪ mass (kg) of water present in this solution ▪ using the specific gravities of pure sulfuric acid (SG = 1.8255) and pure water (SG = 1), calculate the density (kg m-3) and volume (L) of this same solution containing 150 g of sulfuric acid
An impure sample contains 0.74 g of impurities and 4.55 g of benzoic acid. The sample is dissolved in 100 mL of water and heated. The solution is then cooled. How many grams of the impurity will crystallize when the solution has cooled? Include the unit and two decimal places in your answer. The solubilities of the impurity and benzoic acid in cold and hot water are found as an "item" in the "Recrystallization" folder. Solubility Data for Report Questions 11 Compound Cold Water solubility Hot Water Solubility Benzoic acid 0.42 g per 100 mL of water 5.79 g per 100 mL of water Impurity 0.61 g per 100 mL of water 4.62 g per 100 mL of water
a tank contains 100 gal of brine made by dissolving 80 lb salt in water. Pure water runs into the tank at the rate 4 gal/min and the mixture,kept uniform by stirring, runs out at the same rate. The outflow runs into a second tank which contains 100 gal of pure water initially and the mixture, kept uniform by stirring, runs out at the same rate. Find the amount of salt in the second tank after 1 hour
A sodium sulfate solution is measured at 2.2 molal in pure water at a source company. (sodium sulfate molar mass = 142.05 g mol) The lab needs to report the concentration in molarity. What is the final molarity of the sodium sulfate solution? (density of water = 1.0 g mL¯' ; density of the solution = 1.2 g uestion 4 %3D mL-1). (the answer should be entered with 3 significant figures; do not enter units; give answer in normal notation--examples include 1.23 and 120. and -123 and 123. and 12.3) Question 4 of 29> AMoving to another question will save this response. 888. P11 64 F12 eIC " 24 4 & 7\ 3 5 6. 8. %3D dele E R T Y A S D L F G K Z C N alt alt option command command option
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