The mass of solute per 100 mL of solution is abbreviated as (m/v). Mass is not technically the same thing as weight, but the abbreviation (w/v) is also common. How many grams of sucrose are needed to make 625 mL of a 36.0% (w/v) sucrose solution? mass: g sucrose
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- Magnesium sulfate (MgSO4) has a solubility of 38.9 g/ 100 g H2O at 30C. A solution is prepared by adding 9.50 g of MgSO4 to 25.0 g of water at 40C. A homogeneous mixture is obtained. Is the solution saturated, unsaturated, or supersaturated? One gram of magnesium sulfate is added to the solution cooled to 30C. Would you expect some of the MgSO4 to precipitate? If so, how much? If not, how much more MgSO4 can be added before precipitation takes place?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); ____How many liters of a 0.500 MM sucrose (C12H22O11C12H22O11) solution contain 1.7 kgkg of sucrose? Express your answer using two significant figures.
- 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. mass of naphthalene in g (2 decimal places); _____3. freezing point depression (2 decimal places); _____4. 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); _____How many liters of a 0.500 M sucrose ( C12H22O11 ) solution contain 1.6 kg of sucrose? Express your answer using two significant figures.A solution contains 10.05% sucrose (cane sugar) bymass. What mass of the solution, in grams, is neededfor an application that requires 1.00 kg of sucrose?
- A beaker has a mass of 40.94 g. After 5.00 mL of the concentrated hydrochloric acid solution is pipetted into the beaker, the combined mass of the beaker and hydrochloric acid solution is 46.92 g Calculate the density of the hydrochloric acid solution based on the information provided.Fluoridation is the process of adding fluorine compounds to the drinking water. Fluoridated water can help decrease tooth decay in the population. A concentration of 1 ppm of fluorine is typically required to provide adequate amounts. While daily water consumption per person is 151.0 gallons, most people only consume 7.6 of this water; the rest is used for cleaning or gardening. What percent of the sodium fluoride is “wasted”?2) A patient visits your pharmacy with a prescription for 200g Betnovate (betamethasone valerate) 0.1% w/w cream . The specials department has a Betnovate 2.5% w/w cream stock concentration.How much diluent needs to be added to the Betnovate 2.5% w/w cream in grams to produce the Betnovate 0.1% w/w cream for the prescription?State your answer to the nearest whole number.unit- g
- 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.an aqueous hno3 solution contains 1.623 kg hno3/kg h2o and has a specific gravity of 1.304 at 20 degrees celsius. express the composition of the solution in: a. weight percent of HNO3 b. lbm HNO3/ft3 solution at 20 degrees Celsius c. molarityMagnesium chloride is an important coagulant used in the preparation of tofu from soy milk. Its solubility in water at 20oC is 54.6 g/100 g. At 80oC, its solubility is 66.1 g/ 100 g. A mixture is made up of 16.2 g of magnesium chloride and 38.2 g of water at 20oC. a. Is the mixture homogeneous? If it is, how many more grams of magnesium chloride are required to make a saturated solution? If the mixture is not homogeneous, how many grams of magnesium chloride are undissolved? b. How many more grams of magnesium chloride are needed to make a saturated solution at 80oC?