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- What is the volume, in millilitres, of H2SO4 did you use in your second determination in Part 2 of the experiment? Report your answer to the correct number of significant figuresCalculate the mass of MgCl2 necessary to make 500.0 mL of 1.914 M solution. Report your answer with 3 significant figures.At a certain temperature, an aqueous solution is 38.0% H2SO4 by mass and has a density of 1.342 g/mL. What is the molarity of the solution?Provide your answer with 3 significant figures.
- What is the mass, in grams, of 7.30×1020 molecules of caffeine, C8H10N4O2? Express your answer using three significant figures.A physician requests that an iso-alcoholic elixir containing 30.0% alcohol be prepared. How many mL of 10% low alcoholic elixir and 78% high alcoholic elixir must be mixed to prepare 1000 mL of the iso-alcoholic elixir?How many liters of a 0.500 M sucrose ( C12H22O11 ) solution contain 1.6 kg of sucrose? Express your answer using two significant figures.
- How many grams of water must be used to prepare a 2.50 percent by mass (%m/m) sodium hydroxide (NaOH) solution from 12.7 g NaOH? Report your result in decimal notation and to the proper number of significant figures. All numbers are measured. a) 2.50 g water b) 5.08 g water c) 12.7 g water d) 495 g water e) 508 g waterWhat is the mass, in grams, of 1.40×1021 molecules of aspirin, C9H8O4C9H8O4? Express your answer using three significant figures.(When answering this problem, report the answer with the appropriate number of significant figures. When entering units, use proper abbreviated units with proper capitalization.)A beverage drink mix sample is prepared by mixing a packet of beverage powder in a gallon (3.78 L) of water. A sample for analysis is prepared by diluting 10.00 mL of this solution in a 50.0 mL volumetric flask. A student calculates that the concentration of dye in the analyzed beverage mix solution is (2.59x10^-5) mol/L. Determine the mass (in grams) of food dye in the beverage mix packet. Hint: The answer is assumed to be reduced to the highest power possible.
- Calculate the number of Kilograms of NaF per year of 100,000people if the daily consumption of water per person is 132.0 gallons (Sodium Fluoride is 45.0 percent Fluorine by mass. 1 gallon =3.79L, 1year+365 days,density of water+1.0g/lA 1.440 M solution of CH3OH Express the molarity as an integer. B. 0.21 MM solution of HClO4HClO4 Express the molarity to three significant digits.Using dimensional analysis the molarity of a 50% Sodium hydroxide (NaOH) (MWNaOH = 39.997 g/mol;density50% NaOH = 1.525 g/mL).