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classify whether it is greater than, less than, equal to.
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- Calculate how many mEq of sodium (MW 23) are present in an admixture that is prepared by adding a 10 milliliter vial of NaCl (2.5 mEq/mL) to 500 milliliters of 1/2 normal saline. (MW NaCl 58.4; MW CL 35.4).15. A 300.00 mL solution of 0.00165 M A2B5 is added to a 230.00 mL solution of 0.00380 M C2D3. What is pQsp for A2D5?A 0.1220 g vitamin C tablet was dissolves in acid. A 25.00 ml aliquot of 0.01740 M KIO3 was added along with excess KI. The resulting solution was titrated with 0.07210 M Na2S2O3, requiring 21.44 mL to reach the endpoint. calculate percent by weight of ascorbic acid in the tablet.
- Physostigmine salicylate ( M. W. = 413) is 2 ion electrolytes, dissociating 80% in a given concentration ( i.e use a dissociation factor of 1.8). Calculate its sodium chloride equivalent Please answer with explanation. I will really upvoteA 6.00-mL portion of an 8.00 M stock solution is to bediluted to 0.400 M. What will be the final volume afterdilution?Ksp of Cd(IO₃)₂ (462.22 g/mol) is 2.3 × 10⁻⁸. How much dissolved Cd(IO₃)₂ is in a 750.0 mL Cd(IO₃)₂ clear solution? Choices: 621.1 mg 52.57 mg 985.9 mg None of these
- A 1.5000-g sample of cereals was analyzed for nitrogen using the Kjeldahl procedure. The receiving flask contained 69 mL of 0.02 M HCl. After the ammonia was collected, the solution was titrated with 0 M NaOH, requiring 11.72 mL to reach the methyl red endpoint. Calculate and percent protein in the sample (f=5.70). Ans. in 3 SFsWhat mass of NicO3, will dissolve in 1.2 L of 0.435 M Na2CO3 solution? Ksp of NICO3, is 6.6x10^-9A vinegar sample of 28 mL was diluted with distilled water to a 250-mL volume. 25 mL portion of this solution was directly titrated with standard 0.01 mol/L NaOH solution. The consumption was found as 27.1 mL. Find the concentration (mol/L) of acetic acid in vinegar sample.
- 3.) In the assay of NaHCO3, 3.0g of the solid is dissolved in 25mL water. What is the normality? How many mL of 1N H2SO4 will be required to neutralize this solution? From this volume of acid, compute the percent purity of NaHCO3.30mL 0.9% v/v green food coloring. Transfer 2mL of of food coloring to flask, QS the flask to 100mL with DI water. What is the concentration of the standard?The concentration of Cl– in a 300.0-mL sample of water drawn from a fresh water acquifer suffering from encroachment of sea water, was determined by titrating with 0.0516 M Hg(NO3)2. The sample was acidified and titrated to the diphenylcarbazone end point, requiring 6.18 mL of the titrant. Report the concentration of Cl–in parts per million