A chemist conducted an experiment on compounds. He mixed 30% of 8.46 grams of one compound with 75% of 3.51 grams of another compound. How many grams were there in the mixture? use polya’s 4 step method I. What is being asked? What are the given facts? II. What is the number sentence? What operations are to be

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Q: 52.1429 Mass of evaporating dish 9.97mL Volume of KCI solution (use about 6 mL but record actual…

A: It is given : mass of evaporating dish = 52.142 gVolume of KCl solution = 9.97 mLMass of evaporating…

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Q: What is the mass in grams of potassium dichromate(K2Cr2O7) are required to prepare a 350 cm3…

A: Given :- volume of solution = 350 cm3  molarity of potassium dichromate (K2Cr2O7) solution = 5.16 M…

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Q: A solution is prepared by dissolving 83.45 grams of potassium bicarbonate (KHCO3) in 524.6 grams of…

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A: The required solution is 155 millilitres of 0.100 M KI in water.

Q: Calculate the concentration of F−F− in solution and its absolute uncertainty.

A: Answer is 0.01185 ± 0.000059 mol/L  Absolute uncertainty  = 0.000059

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Q: A chemist prepares a solution of potassium chloride (KCI) by measuring out 75.7 mg of KCI into a…

A: Given Mass of kcl = 75.7 mg = 0.0757 g Volume of solution = 100ml = 0.1L

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Q: What is the molarity of a solution prepared by dissolving 4.20 g NaF in enough water to make 0.400 L…

A: Molarity is defined as  Molarity = moles of solute / volume of solution in L  Since volume of…

Q: (ii) Calculate the moles and mass of Zn(NO3)2 in 29.3 cm3 of 0.952 moldm solution Relative formula…

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Q: How many milliliters of 18.0 M sulfuric acid, H2SO4(aq)' must be diluted with water to prepare 2.67…

A: Given : Molarity of sulfuric acid M1=18.0 M Volume of Sulfuric acid V2=2.67×103 ml Molarity of…

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A: Given: Mass of empty 50 mL beaker = 52.5 g Mass of beaker + unknown solution = 66.55 g Drops of NaOH…

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Q: A 800.0 mL aqueous solution of 93.0 mM CoCl2 is combined with 399.0 mL of aqueous 54.0 mM K3PO4. If…

A: Given, Note: 1 mM = 0.001 M Molarity of CoCl2 solution = 93.0 mM = 93.0 × 0.001 M = 0.093 M = 0.093…

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A: The dilution series is shown as follows:

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A: Given: The volume of 0.100 M HCl used for the determination of molarity of NaOH is 25.00 mL.

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Q: A salt solution was evaporated on a hot plate. The dish holding the solution had a mass of 238.7564…

A: Given,  Mass of the dish=238.7564g Mass of the dish ( with dried salt) =241.5823g

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Q: 1. Using the solute formulas provided, convert grams of solute to moles of solute. For the hydrated…

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Q: A 103.0 mL aqueous solution of 43.0 mM COCI2 is combined with 594.0 mL of aqueous 74.0 mM K3PO4. If…

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Q: using exactly 5.00 mL of 0.0400 M stock CuSO4 solution. Add 100 mL of water. Data for Part I Mass…

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Q: Ingredient Amount Ferrous Sulfate Ascorbic acid 300 mg 10 mg 0.5 mL Orange Syrup Benzoic acid…

A: Answer- Given data- 2.9 g of ascorbic acid.

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Q: Methyl salicylate (sp gr = 1.167) 60 mL Lidocaine 4% (w/w) Tween:Span mix (1:4 mix) Polypeg Base 10…

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Q: Volume of 0.100 M Na3PO4 solution used 30 mL 30 mL Initial burette volume of CaCl2 solution .6 mL…

A: Answer: Molar concentration of any compound in its solution is the ratio of its number of moles and…

Q: What volume, in milliliters, of 14.6 M HCl is required to make 68.3 mL of 3.16 M HCl?

A: Given: Initial molarity of HCl = 14.6 M Final volume of HCl = 68.3 mL Final molarity of HCl = 3.16 M

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Q: Part A Calculate the mass percent of a solution that is prepared by adding 37.0 g of NaOH to 315 g…

A: Part A: Solute is NaOH and solvent is H2O. Solute has less number of moles than solvent. Mass…

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