A new potential heart medicine, code-named X-281, is being tested by a pharmaceutical company, Pharma-pill. As a research technician at Pharma-pill, you are told that X-281 is a monoprotic weak acid, but because of security concerns, the actual chemical formula must remain top secret. The company is interested in the drug's Ka value because only the dissociated form of the chemical is active in preventing cholesterol buildup in arteries. To find the pK₂ of X-281, you prepare a 0.092 M test solution of X-281 at 25.0 °C. The pH of the solution is determined to be 3.00. What is the pKa of X-281? Express your answer numerically.

Do the calculations to determine reaction order of both HCl and Na2S2O3 based on data given

! A C Escape Chemistry 106! Type here to search Final Exam Equation Sheet.pdf: X https://docs.google.com/forms/d/e/1FAIpQLSfdH4Cb3Jih0g_TXnrExG40h2E11 NuVCU4MS9 120% The Ksp values for four salts are shown in the picture. The solubility of THREE of * the salts can be directly compared without doing any math. Arrange the three salts in order of increasing solubility. Example: If the three salts that can be compared are the first three and they are already in order of increasing solubility, enter ABC. Solid A: Solid B: Solid C: Solid D: Your answer + Try again! A₂Br3 X₂F5 Y2Cl3 Z₂F3 3.4 x 10-² 7.8 x 10-5 1.9 x 10-16 6.4 x 10-8 Ⓒ↓|||| Barium sulfite (BaSO3) is a sparingly soluble salt. You need to dissolve as much * || a W 65°F Mostly cloudy J ABP 8:28 PM 5/14/2023

Using the image attached for conclusion please make 1 paragraph - The cations present in cation mixture were... - The anions present in anions mixture were... - The cations present in unknown solution were... - The anions present in unknown solution were... Please please please answer as fast as possible please

Need help : Information you can use:  Volume vinegar used (mL) : 5.00 mL     % from label : 5 %     Molarity of NaOH : 0.0982 M   _____________________________________________________     Inital volume NaOH (mL) Trial 1: 0.89   Trial 2: 0.41   Trial 3 :0.57   Final volume NaOH (mL) Trial 1:43.65   Trial 2: 43.49   Trial 3: 43.09   Volume NaOH used (mL)   Trial 1: 42.76 Trial 2: 43.08 Trial 3: 42.52

Check and correct the table and equations

Pls help ASAP

A sjc.cengagenow.com OWLV2 | Online teaching [References] Use the References to access important values if needed for this ques How many milliliters of 6.86 M hydrobromic acid solution should be used to prepare 4.50 L of 0.300 M HBr? mL Submit Answer Try Another Version 1 item attempt remaining Visited

The glassware which contacts the KMnO4 solution (the filter, suction flask and storage bottle), should all be pre-rinsed with a 10% HCl solution, AND THEN FULLY RINSED WITH DISTILLED WATER (VERY IMPORTANT STEP!!! – WHY??

Quantity Your Data 1.   Grams of vinegar sample used for your titration 25.000 g 2. Initial Buret Reading of Sodium Hydroxide solution 10.00 mL 3. Final Buret Reading of Sodium Hydroxide solution 28.00 mL 4. Amount of Sodium Hydroxide Solution used to neutralize the vinegar sample   5. Concentration of NaOH in the NaOH solution 0.050 g/mL 6. Grams of NaOH used to neutralize the vinegar   7. Grams of acetic neutralized by the amount of NaOH   8. Percent acetic acid in the vinegar   Hints:     For #4, The amount of NaOH used is the difference between the starting buret value and the ending buret value.   For #6, Once you calculate the amount of sodium hydroxide used, multiple that value by the concentration of NaOH in the NaOH solution.   For #7, Multiply the value obtained in number 6 by the number 1.5.  Remember, we learned that every 1 gram of NaOH neutralizes 1.5 grams of acetic acid.   For #8, Divide the grams of acetic acid by the grams of vinegar sample and multiply this value by…