The average adult male has a total blood volume of 5.0 L. After drinking a few beers, he has a BAC of 0.24. Blood alcohol concentration (BAC), is given in units of grams of alcohol per 100 mL of blood. A Part A What mass of alcohol is circulating in his blood? Express your answer using two significant figures. VAE ΜΕ ΑΣΦ 0 1 ? Submit Request Answer Provide Feedback g
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- The Ksp value for calcium sulfate [CaSO4] is 2.40 X 10-5 so if a professor made 1825 mL of a CaSO4lag) solution then how many grams of sulfate (SO42) ion would be present in this solution. 0.8345 gram SO42- ion 0.8588 gram SO42- ion 0.9331 gram SO42- ion 1.0036 gram SO42- ion 0.8921 gram SO42- ion 2.. 591..docx W- LAB EXP. #3 -.docx Show AllMX (Ksp = 2.42x10-11) Express your answer in moles per liter. S = Submit Part B S = IVE ΑΣΦ PbCl2 (Ksp = 1.17x10-5) Express your answer in moles per liter. Part C Request Answer Submit Request Answer S = 15| ΑΣΦ Ca(OH)2 (Ksp = 4.68x10-6) Express your answer in moles per liter. IVE ΑΣΦ Submit Request Answer www wwwww ? ? ? M M MConcentration of Acetic Acid in a Vinegar Solution. Average molarity of NaOH Volume HC₂H30₂ sample Final buret reading Initial buret reading Volume NaOH (Show all units and all calculations) Molarity of HC₂H30₂ (unrounded) Average molarity of HC₂H302 (unrounded) Deviations Average deviation Best estimate for molarity of HC₂H302 Average mass percent HC₂H302 46.4mL Oml Ran out of Base ↓ ↓ ↓ ↓ 10.014 HOA je beart giov isults weari?! ferottelucuny Cambia) 10 Kousad Question 1. A Rolaids tablet contains calcium carbonate that neutralizes stomach acid. If 44.55 mL of 0.448 M hydrochloric acid is required to neutralize one tablet, how many milligrams of calcium carbonate are in a Rolaids tablet? CaCO, (s) + 2HCl(aq) → CaCl₂ (aq) + H₂O (1) + CO₂ (g)
- How many mL of 0.779 M HNO3 are needed to dissolve 5.15 g of BaCO3? esc 1 F1 AAB 2 Q *** F2 W # 3 80 F3 E $ 4 000 000 F4 2HNO3(aq) + BaCO3(s) Ba(NO3)2(aq) + H₂O(l) + CO₂(g) R Cengage Learning | Cengage Technical Support % er oo 5 F5 MacBook Pro T A 6 F6 & 7 Y F7 mL * DII U F8 8 DO 9 1Fill in the blanks: Professor Acetico Acido has assigned the analysis of unknown organic compound samples to Al Cohol based on their solubility behavior. The summary of the solubility profile are tabulated below along with the possible structures of the samples. Identify each unknown sample by matching the respective solubility profile with the given structures. (10 pts) Sample HCl(aq) NaOH(aq) NaHCO3(aq) Water 1 ++ 2 3 4 5 Legend: ++ → completely soluble; +> slightly soluble; - > insoluble он OH H3C H2N CH3 OH HO. butanedioic acid cyclohexane butane-2,3-dione cyclopentanam ine resorcinol Sample 1: (name) Sample 2: (name) Sample 3: (name)Table of chemicals and reagents with their physicochemical properties (name, molecular formula, molecular weight, pKa, melting point, boiling point, etc.) Write a short outline or a flow diagram of the procedure List and safety issues Read and understand the MSDS information for each chemical used in this practical Experimental procedure Please do not scratch the clear sides of the UV cuvettes as this will invalidate your results. Part 1: Preparation of a calibration curve A calibration curve should be constructed using at least five concentrations of the pure paracetamol standard supplied in the range 3-15 ug/mL as follows: Weigh about 150 mg of paracetamol accurately and transfer to a 200 mL volumetric flask. Add 50 mL of o.1 M NaOH and dilute to about 100 mL with deionised water (DI). Shake and make up to volume with DI water. Dilute 10 mL of the resulting solution to 100 mL (volumetric flask) with DI water (= stock solution). Prepare standard solutions containing 3, 6, 9, 12 and 15…
- 160.0 mL of a 0.300 M Ca(C₂H3O2)2 solution is diluted to 1.50 L. What is the molarity of the diluted solution? Express the molarity in moles per liter to three significant figures. ΤΙ ΑΣΦ molarity (Ca(C₂H3O2)2) = Submit Provide Feedback Request Answer ? MA 150-mL aqueous solution containing two dissolved sodium salts namely, sodium sulfate (with a density of 2.66 g/mL) and sodium chloride (with a density of 2.16 g/mL), was produced by a BSMLS student. The concentrations of the solutes in 150 ml of solution were 4% (w/v) and 10% (w/w), respectively. To complete the experiment performed by the student, calculate for the following: A. Mole fraction of the solute with the higher number of moles, B. Molarity of the solution if it contains ONLY the solute with the higher number of moles, C. Molality of the solution that you have computed in letter B, and D. Normality of the solution that you have computed in letter B.Knowing the mass of sodium bicarbonate used, one can calculate the moles of sodium bicarbonate and the moles of HCl. With the volume readings from the burette and the moles of HCl calculated, the molarity of the HCl solution can be found. Na2CO3 is mixed with 25 mL of water in the titrated flask. final reading - Initial of HCl in burette is amount used. Show work A.) determine the concentration of the HCl solution from the data for the standardization of the HCl with the Na2CO3. B.)calculate the moles and mass of acetylsalicylic acid in each tablet (molar mass = 180.16 g/mol). C.)calculate the % by mass of aspirin in the tablet.
- 5. You are making ampicillin plates. Before pouring the plates, you add 2 mL of 10 mg/mL to the 400-ml bottle of LB agar that you use to pour the plates. What is the final concentration of the ampicillin in the plates? Express your answer as ug/mL. Show your work.1) 0.1% = ? ug/ml? Only include the number and not any units b) What is the concentration of your stock in ug/ml? Only include the number and not any units c)The molecular weight of tartrazine is 534.4 g/mole. What is the concentration of your stock solution in mM? Be sure to give your answer in milliMolar to TWO decimal places.A technician finds the molar mass to be 134.8 g/mol and the pK, to be 4.65 after processing a data set for a solid acid unknown. Based on the previous information and the list of acid unknowns in the Laboratory Manual, what is the best call the student can make for the identity of the solid acid unknown? picolinic acid B para-aminobenzoic acid glutamic acid monohydrate potassium hydrogen phosphate, monobasic OA. O B. O C. O D.