To make 2% fat milk, you add half a gallon of whole milk to 35 fluid oz of skim milk. What will be the total volume of 2% milk in microliters? 1 fl oz = 29.6 mL, 1 gal = 3.785 L 3.92 × 106 μιχρο 1.374 × 10′ μιχρoL X 2.928 x 106 μιχροι 1.832 × 106 μιχρο X 2.93 × 103 μιχρο
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- Hexane (C6H14, density = 0.766 g/cm3), perfluoro-hexane (C6F14, density = 1.669 g/cm3), and water are immiscible liquids; that is, they do not dissolve in one another. You place 10 mL of each in a graduated cylinder, along with pieces of high-density polyethylene (HDPE, density = 0.97 g/cm3), polyvinyl chloride(PVC, density = 1.36 g/cm3), and Teflon (density = 2.3 g/cm3). None of these common plastics dissolves in these liquids. Describe what you expect to see.If a monolayer of stearic acid has a mass of 2.5*10^-5 g and occupies a surface area of 82 cm^2, what is the height of the monolayer, in cm? The density of stearic acid is 0.839 g/cm^3.A student dissolves a Jefferson nickel to make 100.00 mL of solution in a volumetric flask. The student takes a 5.00 mL aliquot of the first solution and dilutes it to make 100.00 mL of a second solution. The student places a sample of the second solution in a cuvette for analysis using spectrophotometry. The molarity of the copper solution in the cuvette was determined by spectrophotometric analysis to be 2.90 x 10-2 M Cu. Calculate the mass of copper in the Jefferson nickel used to make the first solution. Use the diagram to help visualize the dilution process. WE IN GOD TRUST 100 mL LIBERTY 200 5 mL 100 mL cuvette
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- After creating her standard curve for absorption versus the concentration (M) of FD&C Red 40 and processing her data, Sally found that her drinking strength Kool-Aid sample had a concentration of 4.692 x 10–5 M. If 0.132 grams of Kool-Aid powder was used to prepare an 8-fl oz cup of her assigned flavor, what is the percent by mass of FD&C Red 40 in her Kool-aid powder? Report your answer as a percentage with two places after the decimal. Do not include the percentage sign in your answer. Pay attention to units. You are trying to find the mass percentage of red dye, so you need to know each variable in the equation in Appendix B. Note that the percent by mass equation should be multiplied by 100. There may be some useful conversion factors in the experimental procedure.Suppose some measurements are made on two different homogeneous stones to find out if they are made of the same kind of rock. The mass and volume measurements are listed below. Are the two stones the same type of rock? Why or why not? Show all calculations. Mass Volume Calculations Stone 1 58.0 g 20.0 cm Stone 2 50.1 g 15.0 cm3 21/common/assets/pdfjs/1.0.0.30/web/viewer.ht...ndered-pdf&fullscreen=Dd21-fileviewer-rendered-pdf-dialog&height=746#0Use dimensional analysis to convert the volume for the English measurements of tablespoon and teaspoon to milliters giving your answers to two significant figures. How do these calculated values compare to the ones obtained in the experiment? (1 liquid oz = 29.57 mL; 1 cup = 8 liquid oz; 1 cup = 16 Tbsp.; 1 Tbsp. = 3 tsp.) English Measure Measured Volume in Milliliters (from the Test Data) Calculated Volume in Milliliters 1 Tablespoon (Tbs) 15 ml 1 Teaspoon (tsp) 5 ml show all work with units using dimensional analysis
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