1. Colgate toothpaste contains 0.245 w/w% NaF as a source of fluoride ion (F') a) How many grams of NaF are in 1.0 g of toothpaste? (2.4 x 10° g) b) How many grams of F are in 1.0 g of toothpaste? (1.1 x 10° g)

Q: You wish to prepare 203 grams of 13.1 % FeCl, You will need grams of iron(II) chloride and mL of…

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Q: 4. If you added 800. mL of water to 250. mL of a normal saline solution (0.9% m/v), what would the…

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Q: What is the concentration in w/v% for 7.50 g Na2SO4 (s) dissolved in 179 mL of solution. (2 SF)

A: Given: Mass of Na2SO4 = 7.50 g Volume of Na2SO4 solution = 179 mL

Q: A patient is given 2.0mL of a 3% (m/v) solution of C13H18ClNO; how many milligrams of C13H18ClNO did…

A: % (m/v) is defined as  %(m/v) = mass of solute in g X 100 / volume of solution in mL Since volume of…

Q: What is the theoretical yield of Pl3 if 96.0 g of I, are reacted with an excess of phosphorus…

A: When stoichiometric coefficient results in the equal number of atoms of each element on both the…

Q: What is the final concentration of triamcinolone, in milligrams per gram, if 5 solid oz of…

A: we have to calculate the final concentration of triamcinolone

Q: 34.Créate two conversion factors from the concentrations. (hint: per cent means part of 100) 12.5%…

A: Table A.1 Lengthm cm km in. ft mi1 meter 1 102 10−3 39.37 3.281 6.214 × 10−41 centimeter 10−2 1 10−5…

Q: Molar concentration of the dye stock solution: 2.52e-5 mol/L Solutions(Dilutions) Absorbance…

A: The concentration of the initial stock solution is 2.52×10-5 mol/L. The final volume of solution is…

Q: 1. Fill in the table below by completing the following calculations (moles NaOH, moles HNO3,…

A: ♣ The chemical reaction between HNO3 and NaOH takes place in the following way -…

Q: When 4.67 L of carbon dioxide at 485.6 mmHg and 25.0 ℃ is heated to 475.0 ℃ and converted to 754.2…

A: Given P1 = 485.6 mmHg V1 = 4.67 L T1 = 25°C P2 = 754.2 mmHg V2 = ? T2 = 475°C

Q: Post-lab Question #6: What mass (g) of NaCI is dissolved in 200 g of water in a 0.100 m solution?…

A: Given data: *The mass of water is 200 g.  *Molality is 0.100 m.

Q: 100mg of Zn Cl2 is added to 1L, how many mg/L of Cl- is this?

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Q: Select

A: Dear student I have given answer to your question in the image format.

Q: You have an ointment that contains 40% (w/w) of ingredient Y and another ointment which contains 5%…

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Q: You need to make 13 mL of a 66 mM solution of a compound with FW 128.96. How many milligrams of the…

A: Given, Note: 1 mM = 10-3 M and 1 mL = 10-3 L Concentration of the solution = 66 mM = 0.066 M = 0.066…

Q: How many grams of chromium(III) sulfate, Cr2 (SO4)3, are required to make a 5.23 %(w/v) aqueous…

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Q: How many grams of (NH4)2CO3 are there in 199 grams of an aqueous solution that is 11.8% (w/w)…

A: Given :-  Mass of solution = 199 g  %w/w = 11.8 %  To calculate :-  Mass of NH4(CO3)2

Q: Example: Calculate molarity (M) of the solution contain 2 g of NaOH dissolved in 100 mL? (Na =23,…

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Q: How do you prepare 0.5 liters of 0.01 mg/ml, ascorbic acid given the molecular weight is 176.1…

A: Given: Volume of solution = 0.5 L = 0.5 x 1000 ml = 500 ml mass of ascorbic acid = 0.01 mg/ml x 500…

Q: Part1: 1.05×10-1  m glucose solution made by dissolving the glucose in 100.0 kg of water: ____ mol…

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Q: 1. A cell with a concentration of 0.90% (m/v) NaCl is placed in a 0.45%(m/v) NaCl solution. a. Is…

A: A hypotonic solution is a solution that has a lower concentration of solute compared to the cell.  A…

Q: Calculate the mass of Na₂CO3 (FM 105.988 8) needed to prepare a 15.00 mM solution with a volume of…

A: Given,The molarity of Na2CO3 solution = 15.00 mMvolume of solution = 500.0 mLformula mass of Na2CO3…

Q: None

A: As the acid base reacts in 1:1 ratio it can be solved as,Macid x Vacid  = Mbase x Vbase Macid =…

Q: 1. Calculate the concentration of the following solutions: Find the w/v percent concentration: 5.0 g…

A: (a) Mass of solute, KCl = 5 g Volume of solution = 400 mL

Q: A solution is 21.4% (v/v) Br2 and has a density of 1.18 g/mL. What mass of this solution is needed…

A: Given,  Density of solution = 1.18 g/mL  21% (v/v) is Br2 in the solution .  Total amount of  Br2 in…

Q: Activity 5: Describe the preparation of a. 600 ml of 5.87% (w/v) aqueous glycerol (C,H,OH,46.1…

A: a) The given data contains, mass of solution = 600 ml % of w/v =5.87%

Q: How much mass (in mg) of a protein (MW = 125 kDa) is in a 300 μL of a 200 μM solution? Show…

A: According to the question we have, The molecular weight of the protein is = 125 kDa The volume of…

Q: A. How many grams of NaBr are there in 196 grams of an aqueous solution that is 9.81% (w/w) NaBr?…

A: The mass of solute (in g) present in 100 g of the solution is known as the w/w percent concentration…

Q: How many mL of 2.50% (w/v) glucose contains 78.6 g of glucose?

A: % w/v = (mass of solute in g/volume of solution in mL) × 100%    Formula for dilution :- C1V1 = C2V2…