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- Patients undergoing an upper gastrointestinal tract laboratory test are typically given an X-ray contrast agent that aids with the radiologic imaging of the anatomy. One such contrast agent is sodium diatrizoate, a nonvolatile water-soluble compound. A 0.378-m solution is prepared by dissolving 38.4 g sodium diatrizoate (NaDTZ) in.l.60 102 mL water at 3 1.2C (the density of water at 31.2C is 0.995 g/cm3). What is the molar mass of sodium diatrizoate? What is the vapor pressure of this solution if the vapor pressure of pure water at 31.2C is 34.1 torr?Many solutions are found in the home. Some are listed below, with the composition as printed on the label. When no percentage is indicated, components are usually given in order of decreasing amount. When water is present, it is often not mentioned on the label or it is included in the inert ingredients. Identify the solvent and solutes of the following solutions: a.Antiseptic mouthwash: alcohol 25, thymol, eucalyptol, methyl salicylate, menthol, benzoic acid, boric acid b.Paregoric: alcohol 45, opium 0.4 c.Baby oil: mineral oil, lanolin there happens to be no water in this solution-why? d.Distilled vinegar: acetic acid 5port youl answers WILH igures. Pay attention to the units in the first column. Table 1 (Report) Tablet identity (brand) Tums Titration Tablet 1 Mass of tablet/sample (g) 1,3 11 9 Volume of HCl solution (mL) 10 ml Concentration of HCl solution (M) ).3M Amount HCI (mmol) Concentration of NaOH solution (M) 0.1M 30.3 ml. 48.7ml: Initial burette reading (mL) Final burette reading (mL) Volume of NaOH solution (mL) Amount NaOH (mmol) Amount CaCO3 (mmol)* Molar mass of CaCO3 (mg mmol-') Mass of CaCO3 in tablet/sample (mg) % mass CaCO3 in tablet (%) 500 Manufacturer's specification (mg) Cost of one bottle of tablets (S) Number of tablets per bottle
- Question . Determination of percent water (%H₂O) in hydrated FeSO4nH₂O is demonstrated in General Chemistry Laboratory (I), Chem. 105. The following table contains the results collected from the students groups. 1 23 2 4 5 6 3.38 3.47 3.35 3.40 3.44 3.41 1.4 1.35 1.35 1.44 1.49 1.39 Q1) Assume MM of FeSO4 is 152 g/mol. What is the average number of water molecules in the samples? Q2) What is the average % water (wt/wt) for all samples? n= Moles H₂O Mole FeSO, Average n Q3) What is the average number of moles of water for all samples? Q4) What is the correct formula of the salt? % water in hydrated salt (ww/wt)Part IV. Preparation of 100 mL 25% Solution X Materials: Solution X, measuring cylinder, distilled water, and parafilm. Show calculation steps. (1) Calculate the volume of Solution X required. (2) Calculate the volume of distilled water required_ (3) Deliver the calculated amount of distilled water in the measuring cylinder. (4) Add the calculated amount of Solution X to the measuring cylinder. (5) Seal the opening of the measuring cylinder with parafilm. Mix well. (6) Transfer the prepared 25% Solution X into a labelled container.solute 0.147 g C6H7NaO6 molar mass 198.11, dissolves in 50.00 mL, absorbance of solution 0.862, absorbance of standard 0.863 calculate moles of solute, volume of solution (L), %m/v, M, % error
- [Review Topics] [References] Use the References to access important values if needed for this question. An aqueous solution of iron(II) bromide, FeBr2, contains 3.92 grams of iron(II) bromide and 17.7 grams of water. What is the weight/weight percent of iron(II) bromide in the solution? Weight/weight percent %3DConcentration 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)*** CALULATE FINL CONCENTRATION USING 2 IG FIGS AND APPROPRIATE UNITS A 6.0 mLmsample of a 50.0 % (mm/vv) acetic acid (HC2H3O2) solution is added to water to give a final volume of 34 mL.
- Help -ngine.html?ClassID=1440190321 John measures out the required 150 mL of 6% H2O2 in a graduated cylinder. What volume of distilled water will he need to add to get to the desired 300 mL of 3% solution? [? ] mL of dH2O mL dH,O EnterThe molecular weight of acetylcholine chloride is 181.7. A stock solution of 1.817 g acetylcholine is 10.0mL was prepared by the stockroom. What is the concentration of this stock solution in % w/v and in molarity? From this stock solution of acetylcholine chloride, 0.40 mL was added to the sample tube brining the total volume in the sample tube to 3.0 mL. What is the concentration of the acetylcholine chloride in the sample tube in g/mL and in molarity?Solubility Curves of Selected Compounds 150 140 130 120 110 100 NANO 90 8 80- * 70 60 NHC 50 40 Náci 30 20 KCIÓ 10 Cez(so, 10 20 30 40 50 60 7O 80 90 100 Temperature (c) The solubility of ammonium chloride at 70 °C is O 34 g/100 g water O 39 g /100 g water O 47 g/ 100 g water O 60 g/100 g water 1 3 4 6 DELL %24 %23 个 COND Grams of solute