Prepare 100.00 mL of a solution with ALL the following chemicals into together; CHEMICALS PROVIDED

What volume of a 0.462 M NaOH solution would be required to titrate 2.85 g of pure KHP?

Hydrochloric acid (24.9 mL of 0.195 M) is added to 466.0 mL of 0.0830 M Ba (OH), solution. What is the concentration of the excess H+ or OH ions left in this solution? Molarity = M Drag and drop your selection from the following list to complete the answer: OH H+

Perform the following calculations for your procedure: 1. To prepare a 100.0-mL 4.00 mM Fe³+ solution, how much solid of FeCl, would you need to weigh on the balance? 2. Fill in the following table for your diluted FeCl, standard solutions to determine the volume of the 4.00 mM stock solution you'd need to prepare 1.50-mL of each of the following dilutions. You may choose 4 concentrations between 0 and 4.00 mm. [Fe3+] (mM) Stock vol (μl) 4.00 0.00

A graph of absorbance versus concentration (M) for a series of iron-salicylate solutions has the following line equation: y = 1040.8x + 0.0094.  Absorbance is on the y-axis and concentration is on the x-axis.  The absorbance of an iron-salicylate solution of unknown concentration is determined to be 0.615.  What is the concentration of this solution?

3. The Laboratory custodian prepared saturated NaNOy) solution of 10.9 M at 25°C. How many grams of NaNO, are in 230 ml of the solution at the same temperature? a) 195.5 g b) 194.6 g c) 196.5 g d) 19.8 g 4. A beaker of 175 ml Of 0.950 M NaCI left uncovered for a period. If, by the end of the time period, the volume of solution in the beaker has decreased to 137 ml (the volume loss is due to water evaporation) What is the resulting concentration of the solution? a.)1.21 M b) 12.1 M c) 1.44 M d) 1.21 M

There is a solution containing two metal cations. The goal is to separate them by slowly and carefully adding a solution of an anion, until one mental cation precipitates as a compound with that anion, leaving the other metal cation still in solution. M+ is Ag+, M2+ is Ca2+, anion is SO4 2-, first Ksp is 1.2 x 10-5, second Ksp is 6.1 x 10-5, and the starting concentrations of M+ is 1.50 x 10-2 M and M2+ is 3.50 x 10-2M. Using these values, predict which metal will precipitate first and what concentration of anion the precipitation will begin.

To 0.340 L of 0.150 M NH3 is added 0.150 L of 0.120 M MgCl. Part A How many grams of (NH4)2SO4 should be present to prevent precipitation of Mg(OH)2(8)? Express your answer using two significant figures. ΜΕ ΑΣΦ m = 2.38 Submit Previous Answers Request Answer X Incorrect: Try Again; 3 attempts remaining ? g

A stock solution of Na2B having a concentration of 0.1486 M is used to prepare four calibration standards, A-D in the table below, by diluting the indicated volume of this solution to a total volume of 50.00 mL. Complete the table by entering the molarity of B2- for each standard solution. Show an illustrative calculation for tube ‘A’. Use the dilution formula and express each result to one more digit than allowed by applying the rules of significant figures.

2.000 g TUMS tablet (CaCO3 and Binder) was analyzed in a lab. 11.42 mL of 0.871 M HCI was needed to dissolve the CaCO3 (active ingredient) of TUMS Tablet. Find the mass and % by mass of CaCO3 in TUMS Tablets. ( 459.00 mg O 75% 50% 605.00 mg 30% O 25% O 400.00 mg O 500,00 mg