Decide whether each proposed multiplication or division of measurements is possible. If it is possible, write the result in the last column of the ta proposed multiplication or division Is this possible? result yes (3.0 mg)· (0.016 g) = ? O no ? О yes 7.0 mL" ) · (7.0 mL) = ? no 60. mm yes = ? 0.060 m no olo O O O O
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- On a balance mass an amount of potassium hydrogen phthalate (KHP) needed to neutralize approximately 12 ml of 0.1 M NaOH(aq), and completely transfer the KHP to a clean 125-ml Erlenmeyer flask. Record the mass of the KHP at least to The thousandth decimal place. please answereQs/ A 0.2121-g sample of pure Na,C,0, (134.00 g/mol) was t ed with 43.31 mL of KMnO;. What is the normality of the KMnO, solution? The chemical reac- tion is 2MnOj; + 5C,0i + 16H* — 2Mn?* + 10CO, + 8H,Otwo strips of metal each weighing 100g are placed into a cylinder containing water. The volume of water displaced is 8.8 ml in one case and 37.0ml in the other case. identify the two metal strips. AU Fe Al Pb Ag 19.3 7.9 2.7 11.3 10.5 * For this question do i have to do any calculations? Or just state that Fe is Iron, Ag is silver etc.? Which weighs the most, 10cm3 of iron or 5.0cm3 of silver?
- As part of the aspirin synthesis lab the orgo students also had to perform the following calculation to demonstrate their knowledge. Are you able to help them work this out? Saponification is a process in which soap is produced from the chemical reaction between animal fat (triglycerides) and a strong base such as KOH. An example of such balanced chemical reaction is shown here: C51H98O6 + 3KOH → C3H5(OH)3 + 3C16H31O2K (Triglyceride) (Soap) if during the saponification reaction 231.5 g of C51H98O6 is mixed with 231.5 g of KOH and 160 g of soap is produced. Calculate the theoretical yield of soap C16H31O2K and indicate who is the limiting reactant. (Provide your answer to 2 decimal places) Calculate the percent yield for this reaction (Provide your answer to 1 decimal place) *Show ALL steps and mathematical equations involved in your calculations to help the orgo students. Remember to label all…A water quality monitoring found that local bayou contains 8.72x10-4 % (wt/wt) nitrate ion ( MW = 62.01 g/mol). Yet the EPA standard for the nitrate content in a natural water body is 1.613x10-4 M or lower. Is the mentioned bayou water in that location acceptable from the EPA standard ? List your calculation steps (Density of bayou water is 1.0 g/mL).How many grams of Mn3O4 can be obtained from 1.00 g MnO2? how many ounces of Mn3O4 can be obtained from1.00 lb MnO2? Whatwt of Mn ore should be taken so that the percentage of MnO2 in the ore can be found by multiplying by 5 to the number of centigrams og Mn3O4
- A 1.59 g sample containing KI was analyzed gravimetrically and 0.0538g of Barium Iodate was recovered... express the results of this analysis as percent posassium iodide.Stock iron(II) solution (200Ug mL-1 Fe) ferrous ammonium sulfate hexahydrate mass= 0.1437g, transfer it to a 100 ml beaker. add 15 ml approx of water and 15m1 'approx of dilute sulphuric acid (2M H2SO.). then transfer FeII to 100 ml flask makeup to the mark with water. calculate the moles of ferrous ammonium sulfate hexahydrate solution in unit ug/mL.In a clean and dry crucible with cover weighing 24.342 g some of the unknown hydrate (CuSO4.nH2O) was placed in the crucible to reach a mass of 27.557 g. The crucible was heated several times until it reached a final constant mass of 26.403 g. Use these measurements to complete your data sheet and show complete calculation for the missing values.
- Given the following data for Mass of test tube and stearic acid = 14.17 gMass of test tube = 11.40 gFreezing point of strearic acid = 69.59o CMass of weighing paper + naphthalene =1.230 gMass of weighing paper = 0.920 gFreezing point solution = 64.00o CKf = 4.5o C/m Determine the following1. mass of stearic acid in g (2 decimal places); 2.77g2. mass of naphthalene in g (2 decimal places); 0.31g3. freezing point depression (2 decimal places); 3.93oC4. molality of solution (3 significant figures); _____5. moles of naphthalene (3 significant figures); _____6. molar mass of naphthalene, experimentally (3 significant figures); _____7. % error if theoretical molar mass of naphthalene is 128.17 g/ mole, USE ABSOLUTE VALUE (3 significant figure); _____Given the following data forMass of test tube, beaker and cyclohexane = 100.17 gMass of test tube and beaker = 84.07 gFreezing point of cyclohexane = 6.59 oCMass of weighing paper + naphthalene =1.080 gMass of weighing paper = 0.928 gFreezing point solution = 5.11oCKf = 20.8oC/mDetermine the followinga. mass of cyclohexane in g (2 decimal places); _____b. mass of naphthalene in g (4 decimal places); _____c. freezing point depression (2 decimal places); _____d. molality of solution (3 significant figures); _____e. moles of naphthalene (3 significant figures); _____f. molar mass of naphthalene, experimentally (3 significant figures); _____g. % error if theoretical molar mass of naphthalene is 128.17 g/ mole, USE ABSOLUTE VALUE (3 significant figure); ____One way in which the useful metal copper is produced is by dissolving the mineral azurite, which contains copper(I) carbonate, in concentrated sulfuric acid The sulfuric acid reacts with the copper(I) carbonate to produce a blue solution of copper(I) sulfate. Scrap iron is then added to this solution, and pure copper metal precipitates out because of the following chemical reaction: Fe(s) + CuSO4(aq) -> Cu(s) + FeSO4(aq) Suppose an industrial quality-control cherist analyzes a sample from a copper processing plant in the following way. He adds powdered iron to a 300. mL copper(I) sulfate sample from the plant until no more copper will precipitate. He then washes, dries, and weighs the precipitate, and finds that it has a mass of 75. mg Calculate the oriqinal concentration of copper(I) sulfate in the sample. Round your answer to 2 significant digits.