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A. Describe the preparation of 4.75 liters of 1.55M NaCl from solid NaCl and H2O. (12pts)...
Describe the preparation of 4.75 liters of 1.55M NaCl from solid NaCl and H2O.
6. Given the reaction below, answer the following questions. (30 pts) CH4(g) + S(g) → CS2 (g) + H2S(g) A.Balance the equation above. B.Is the sulfur oxidized or reduced in the reaction? C.Given 3.841x1025 molecules of CH4, how many moles is this? Show charges D.Given 25.15 grams of Sulfur gas, how many moles of H2S could be formed? E.How many liters would the moles of H2S gas(from Part D) occupy at 25.0°C and 1.25 atm? F.What would be the volume(L)...
Calculate the % (mass/volume) of a 250.mL aqueous solution, containing 24.0 g of Ba(OH)2.
6. A. Describe the preparation of 750. mL of 0.55M saline(salt) solution from solid Naci (molar mass=58.5g/mol) and water. (12 pts) B. Determine the Molarity of sucrose(342 g/mol) in a 2 liter bottle of Mountain Dew containing 250.g of sucrose.
If the solubility of sodium chloride (NaCl) is 30.6 g/100 mL of H2O at a given temperature, how many grams of NaCl can be dissolved in 250.0 mL of H2O? If the solubility of glucose (C6H12O6) is 120.3 g/100 mL of H2O at a given temperature, how many grams of C6H12O6 can be dissolved in 75.0 mL of H2O? Only 0.203 mL of C6H6 will dissolve in 100.000 mL of H2O. Assuming that the volumes are additive, find the volume/volume...
Part 1. Preparation of a Solution from Solid Reagent Sodium phosphate dodecahydrate, Na3PO4 • 12 H2O (molar mass = 380.12 g/mol) Final Volume of Solution Required, mL So ML Final Concentration of Solution Required, M 0.07800 M Moles of Solute Required, mol Target Mass of Solute Required, g Show your calculation for the moles solute required below: Moles volume (L) x molarity (4) Show your calculation for the mass (grams) solute required below: Solute : Moles (ro) x mour Mass...
Part A. caculate the molarity. 6.65 g of NaCl in 250. mL of a NaCl solution Part B. calculate the volume, in liters, for each of the following 34.0 g of NaHCO3 from a 1.00 M NaHCO3 solution (express your answer as three significant figures) Part C. calculate the final concentration of each of the following 1. a 20.0 ml sample of an 7.0% (m/v) KBr solution is diluted with water so that the final volume is 222.0 mL 2....
10. Volume of sample in liters 11. Molarity of NaCl solution (Show calculations.) Questions and Problems 05 A 15.0-ml sample of NaCl solution has a mass of 15.78 g. After the NaCl solu- tion is evaporated to dryness, the dry salt residue has a mass of 3.26 g. Calculate the following concentrations for the NaCl solution. a. % (m/m) b. % (m/v) c. molarity (M) Q6 How many grams of KI are in 25.0 mL of a 3.0% (m/v) KI...
Describe the preparation of 10 liters of 0.02M phospate buffer, ph 6.9, starting from (a) a 2M H3PO4 solution and a 1 M KOH solution (b) 1M solutions of KH2PO4, and Na2HPO4 (c) solid Na3PO4 and 1M HCl Please provide detailed explanations!
1)Calculate the mass percent (m/m) of a solution prepared by dissolving 54.78 g of NaCl in 151.4 g of H2O. Express your answer to four significant figures. 2)Vinegar is a solution of acetic acid in water. If a 245 mL bottle of distilled vinegar contains 26.1 mL of acetic acid, what is the volume percent (v/v) of the solution? Express your answer to three significant figures. 3)Calculate the mass/volume percent (m/v) of 24.0 g NaCl in 69.5 mL of solution....