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- A 15.0% by weight solution was prepared using 90.0g of KCl and the resulting density of the solution is 1.101g/mL. (MW KCl 74g/n). volume of solution(mL)? milliosmole of solute? %w/v? weight of solvent(g? N?6. One teaspoon of sertraline 20 mg/mL must be mixed into eight fluid ounces of water before consuming. Express the final concentration of sertraline when mixed with water as a ratio strength (w/v). Rounddenominator of ratio strength (w/v) to the nearest whole number.Answers should be in 4th decimal places An automobile antifreeze mixture is made by mixing equal volumes of ethylene glycol (SG=1.114; MW = 62.07 g/mole) and water at 20oC. The density of the mixture is 1.070 g/mL. Express the concentration of ethylene glycol asa) Volume percentb) Mass percentc) Molarityd) Molalitye) Mole fraction
- Stock iron(II) solution (200Ug mL-1 Fe) ferrous ammonium sulfate hexahydrate mass= 0.1437g, transfer it to a 100 ml beaker. add 15 ml approx of water and 15m1 'approx of dilute sulphuric acid (2M H2SO.). then transfer FeII to 100 ml flask makeup to the mark with water. calculate the moles of ferrous ammonium sulfate hexahydrate solution in unit ug/mL.Sum of coefficients C7H8 + O2 --> CO2 + H2O after balancingMagnesium +Acetic Acid --> C2HG5+ O2 ---> Iron (III) carbonate -->
- 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.]1. How many microliters of a 25 \mu M MgCl2.6H2O solution would be needed to provide 152.48 ng of MgCl2.6H2O for a chemical reaction? [ Mwt MgCl2.6H2O = 203.3 g/mole25 ppm of CaCO3 was found in the water sample obtained on the lake in the nearby town.Calculate the moles of CaCO3 having a molar mass of 100.09 g/mol in 10 liters of water samplesolution having a density of 997 kg/m3. (Ans.: 24.95 moles CaCO3)
- 1. What is the molarity of glucose (mol wt =180) in a solution containing 6.70g of glucose and 150 g of water? The final solution has a specific gravity of 1.015. Round off to 4 decimal places. 2. What is the osmolality of 12.5% by weight solution of AlCl (MW=133 g/mole)? 3. What is the normality (N) by w/v solution of CaCl containing 5 g of CaCl and 105g of water (CaCl MW=111 g/mole)? The specific gravity of the final solution is 1.35.What is the molarity of a concentrated solution of sulfuric acid with a specific gravity of 1.84 and 95.0% by weight sulfuric acid? specific gravity = density of substance at certain temp/density of water at 4 degrees C the density of water is 0.999973 g/mL at 4 degrees celsius. Describe how to prepare 3.0 L of 0.100M. I will pipet ______ and add this to 200mL water. The solution will be stirred and diluted to 3L with water.An aqueous solution of sodium hydroxide contains 30.0% NaOH by mass. It is desired to produce an 10.0% NaOH solution by diluting a stream of the 30% solution with a stream of pure water. Calculate the ratios (liters H2O/kg feed solution) and (kg product solution/kg feed solution).
