One cup of fresh orange juice contains 139 mg of ascorbic acid (vitamin C, C6H8O6). Part A Given that one cup = 265.4 mL, calculate the molarity of vitamin C in orange juice. Express your answer to an appropriate number of significant figures with the appropriate units. НА M= Value Submit Request Answer ? Units
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- Beaker 0.00200 M Fe(NO3)3, mL 0.00200 M NaSCN, mL total volume, mL 1 3.000 2.000 10.00 2 3.000 3.000 10.00 3 3.000 4.000 10.00 4 3.000 5.000 10.00 5 (blank) 3.000 0.000 10.00 In solutions 1-4 you are adding 3.00ml of 0.00200M Fe3+ to some SCN- solution and dilutiing to a final volume of 10.00ml. What is the new concentration of the Fe3+ due to dilution? Your answer should have 3 sig figs.What is the concentration, in ppm, if 0.9081 grams of Calcium chloride isdissolved in 250.0 ml of water. Give your answer inppm. (MM= 110.97) Report your answer to 4 significant figures. Do not include the unit when writing your answer.A 335 −mL−mL can of soda pop contains 44 gg of sucrose (C12H22O11C12H22O11). Part A What is the molarity of the solution with respect to sucrose? Express your answer using two significant figures.
- If a 6.00% (w/v) citric acid solution contains 6.00 grams of citric acid in every 100.0 mL of the solution, how many grams of citric acid are present in 385 mL of the 5.00% (w/v) solution? Show your work using dimensional analysis and report your answer with the correct number of significant figures. What volume of the 6.00% (w/v) citric acid solution described above would be needed to provide 425 mg of citric acid for a reaction? For full credit, show your work using a single dimensional analysis grid (or one chain of conversion factors) and report your answer with the correct number of significant figures. (You should know the relationship between grams and milligrams.) Convert 95.0 ft/s to km/h using dimensional analysis. For full credit, use one long chain of conversion factors using the given relationships below plus relationships between meters and centimeters and between meters and kilometers (relationships you should know). Report your answer with the correct number of…A student dissolves a Jefferson nickel to make 100.00 mL of solution in a volumetric flask. The student takes a 5.00 mL5.00 mL aliquot of the first solution and dilutes it to make 100.00 mL100.00 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 2.90×10−2 M Cu.2.90×10−2 M Cu. Calculate the mass of copper in the Jefferson nickel used to make the first solution.please see image attached: A chemistry student weighs out 0.146 g of chloroacetic acid into a 250. mL volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.1400M(molarity) NaOH solution. Calculate the volume of NaOH solution the student will need to add to reach the equivalence point. Round your answer to 3 significant digits.
- Sucrose solution for experiment 1: (Question a-c)Prepare a solution of sucrose by accurately weighing 9.0 – 9.25 g of sucrose into a 100mLbeaker / conical flask. Record the mass of the sample. Add 25 mL distilled water. Mix until allcrystals dissolve.NaCl solution for experiment 2: (Question d-f)Prepare a solution of NaCl by accurately weighing approximately 1.5 g of NaCl into a 100 mLbeaker / conical flask. Record the mass of the sample. Add 25 mL distilled water. Mix until allcrystals dissolve.MgCl2٠6H2O solution for experiment 2: (Question d-f)Prepare a solution of magnesium chloride by accurately weighing approximately 3.6 g ofMgCl2٠6H20 into a 100 mL beaker / conical flask. Record the mass of the sample. Add 25 mLdistilled water. Mix until all the crystals dissolveA solution contains 500 mg of potassium acetate, 500 mg of potassium bicarbonate and 500 mg of potassium citrate per teaspoon. How many millimoles of potassium acetate, potassium bicarbonate and potassium citrate. are contained in a 25 ml vial? *Type in your answer in 2 decimal places. Do not forget the unit. Potassium acetate (MW-98 g/n) = Potassium bicarbonate (MW-100 g/n) = Potassium citrate (MW-306 g/n) =The concentration of PSA (prostate-specific antigen) in the blood is sometimes used as a screening test for possible prostate cancer in men. The value is normally reported as the number of nanograms of PSA per milliliter of blood. A PSA concentration of 1.7 ng/mL1.7 ng/mL is considered low. Express that value in terms of the units shown. PSA= g/L PSA= kg/m3 PSA= mg/L
- Which of the following given statements is false? 1. The electrical conductivity of water is dependent on the temperature of the water sample. Removal of suspended particles by sedimentation depends upon the size and specific gravity of those particles. Suspended solids retained on a filter may remain in suspension if their specific gravity is similar to water while very dense particles passing through the filter may settle. Sodium hydroxide and sodium chloride are both bases. 2. In a sedimentation process, the solid particles settled at the bottom of the container because they are heavier than water and are acted upon by gravity. In the process of distillation, the condenser helps in the conversion of the vapor that goes inside it into liquid. After filtering a mixture using a filter paper, there is more solute at the bottom of the container compared to the contents of the filter paper. In the reaction between dry ferrous sulfate and dry potassium ferricyanide, no change is observed.…If you made a solution of 1.5 ppm of Pb in 1.25 mL of nitric acid, from 0.25 mL of a stock solution. What is the concentration of the stock solution? Give your answer in ppm. Use the correct number of significant figures.You have a stock solution certified by a manufacturer to contain 245.0±0.2 ?g SO2−4/mL. You would like to dilute it by a factor of 100 to obtain 2.450 ?g/mL. Two possible methods of dilution are stated. For each method, calculate the resulting absolute uncertainty in concentration. Use the manufacturer's tolerances in the table for uncertainties. Glassware Tolerance 1‑mL transfer pipet ±0.006 mL±0.006 mL 10‑mL transfer pipet ±0.02 mL±0.02 mL 100‑mL volumetric flask ±0.08 mL±0.08 mL Method A: Dilute 10.00 mL up to 100mL with a transfer pipet and volumetric flask. Then take 10.00 mL of the dilute solution and dilute it again to 100 mL. absolute uncertainty: ±.-----?g/mL Method B: Dilute 1.000 mL up to 100 mL with a transfer pipet and volumetric flask. absolute uncertainty: ±------?g/mL