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- 315mL of water was added to 2100 mL of 19M NaCl solution. What is the new concentration of the solution? (Use the given information: MW: Na = 23g / mol , CI=35g/mol)A. 2.85 MB. 2.48 MC. 18.60 MD. 19.0 M 500g of Al2S3 dissolved in H2O to make 15.0 L of solution. What is its normality?(MW: Al = 27g / mol S = 32g / mol H=1g/mol, O=16g/mol)A. 0.11 NB. 0.07 NC. 0.22 ND. 0.04 N The concentration of a 1500mL aqueous KCI solution was increased from 25.0 M to 80.0 M by evaporation. How much H₂O was removed? (MW: K= 39g/mol, Cl = 35g/mol, H = 1g / mol 0=16g/mol)A. 1.03 LB. 0.47 LC. 1968.75 mLD. 4.68.75 ml. Suppose that 15M of NaCl solution with a volume of 15L is heated and loses 2000ml of its water content. What would be the final concentration of your NaCl sample? (MW: Na = 23g / mol , Cl = 35q / mol, H=1g/mol,O=16g/mol)A. 3.75 MB. 0.0375 MC. 37.5 MD. 375.0 MYou were tasked to prepare 590 ml of 3.00 M HNO3. If you were provided a stock solution of 70.5% (w/w) HNO3 (MW = 63.0 g) with a specific gravity of 1.42, what volume of this solution (in ml) will you be using?The concentration of mercury in a polluted lakeis 4.5 ppb (part per billion), and the density of water is 1.0 g/mL. (a) Calculatethe concentration of mercury: (i)in g/L (microgram per liter), and (ii) in mol/L.(b)If the lake has surface area of 1.3km2and an average depth of 16m, how many kilograms of mercury are present in the lake?
- 5 mL of HCl and 5 mL of CH3COOH solutions are titrated with a pipette in a glass bottle and 150 mL of distilled water is added. The initial conductivity (720) of this diluted mixture is measured and recorded in the table. Then, one ml of M/10 NaOH solution is added and their conductivity is measured and recorded in the table. Find the concentration of HCl and CH3COOH.A 315mL of water was added to 2100 mL of 19M NaCI solution. What is the newconcentration of the solution?(Use the given information: MW: Na = 23 g/mol, C1 = 35g/mol)A. 2.85 MB. 2.48 MC. 18.60 MD 19.0 M 500g of Al2S3 is dissolved in H20 to make 15.0 L of solution. What is its normality? (MW:Al=27g/mol, S=32g/mol, H=1g/mol, 0=16g/molA. 0.11 NB. 0.07 NC. 0.22 ND. 0.04 N(a) A solution of 20.91 % by weight H₂SO4, has a specific gravity of 1.150. What is the normality of this solution? (b) Water is added to dilute this solution to a solution of 3.03% by weight H2SO4 (SG=1.020). What is the new normality of the resulting solution and how were they mixed? (Assume 100 mL of the original solution was used.)
- A partially filled one-gallon [gal] pitcher, that has a mass of 0.35 kilograms [kg] when empty, is sitting on a kitchen counter. Assume the total mass of the pitcher and its contents is 2 kilograms [kg]. The pitcher contains a liquid that has a molecular weight of 19.5 grams per mole [(g)/(mol)] and a molarity of 57 moles per liter [(mol)/(L)]. (a) Determine the volume of the liquid in the pitcher in units of liters [L]. (b) Determine the specific gravity of the liquid in the pitcher.Calculate the equivalent weight (EW) and normality (N) for a solution of H3PO4 given the following equations. The molarity of H3PO4 is given in brackets. Pick the answers from the options given (RMM H3PO4 = 98) A(5M) B (0.5M)You have been tasked with determining the wastewater solids generated by a community. To determine solids, you collect two effluent samples of 100 mL each. The first sample was placed, unfiltered, in a crucible and dried at 105 ̊C overnight. The weight of the dried sample and crucible was 5.6112 g, while the weight of the crucible was 5.6000 g. The second sample was filtered. The filter and drying dish were dried overnight at 105 ̊C after which they weighed 2.1085 g. The filter and drying dish were then placed in a muffle furnace at 550 ̊C for 30 mins, after which they weighed 2.103 g. The drying dish weighs 1.6000 g and the filter weighs 0.5 g. a) Determine the concentration of TS, TSS, VSS, FSS and TDS in mg/L: b) Does TSS concentration meet the federal effluent regulations? If not, what removal techniques would you recommend and what minimum percent must be removed prior to discharge?
- The solubility of KNO3 (in gr KNO3 per 100 gr water) is 155 gr KNO3 at 75 oC and 38 gr KNO3 at 25 oC. What mass of KNO3 (in grams) will crystallize out of solution if exactly 100 gr of its saturated solution at 75 oC are cooled to 25 oC? a. 75.4 gr b. 110 gr c. 45.9 gr d. 30.7 grA solution is formed by dissolving 2.000 kg of sugar (sucrose, density = 1587 kg·m−3) in 1.000 kg of water (density = 1000 kg·m−3). Assume that the volume of the solution formed is the sum of the sugar volume and the water volume. a) What is the final volume of the solution? b) What is the density of the solution?I wish to prepare 500.0 mL of a 800.0 ppm w/v fluoride (MW = 18.9984 g/mol) solution. a.)How many grams of beryllium fluoride (BeF2, MW = 47.01 g/mol) are needed to prepare this solution? Assume the final solution has a density of 1.00 g/mL. b.) How many grams of beryllium fluoride are needed to prepare 500.0 mL of 0.882 M F−? Thank you!