Lareina the laboratory technician is given the task of making a solution containing HOBr (K = and testing its behavior when strong acid or base is added to it. Part 1 2.8 x 10% and KOBr First, Lareina combines 80.75 g KOBr and 230 mL of 1.25 M HOBr, and adds enough distilled water to make 800 mL of solution. What is the pH of this solution? pH solution=| Part 2 Next, Lareina adds 14.0 mL of 2.10 M HNO3 to 355 mL of the solution made in Part 1. What is the pH of the solution after the HNO3 is added? pH after HNO3 added= Part 3 Finally, Lareina adds 16.0 mL of 2.30 M NaOH ito 350 mL of the solution made in Part 1. What is the pH of the solution after the NaOH is added? pH after NaOH added=

A solution is made by dissolving 17.8 g of magnesium sulfite, MgSO3, in enough water to make exactly 100 mL of solution. Calculate the concentration (molarity) of MgSO3 in mol/L (M).   a. 3.17 mole MgSO3/Lb. 2.71 mole MgSO3/L c. 1.71 mole MgSO3/L d. 2.17 mole MgSO3/L

A potasium carbonate solution is 14.6% KCO3 by mass and has a density of 0.68 g/mL. Calculate molarity of the solution. A. 0.72 M B. 6.67 M C. 12.8 M D. 1.44 M

I mix 64.84 milliliters of isopropyl alcohol with water, creating an 71.94 percent-by-volume solution. What volume of solution did I prepare? a. 90.13 milliliters O b. 110.95 milliliters O c. 7.10 milliliters O d. 119.83 milliliters O e. 129.81 milliliters

Use the following information to answer the next three questions Electrowinning of Copper Battery Thin sheet of pure copper (Cathode) Thick block of impure Cu (Anode) - Tank Cu2+ Acidified copper sulphate solution (Electrolyte) Cu2+ Impurities (Anode mud) The cell shown above is used to purify copper. At one electrode, impure copper is converted into copper(II) ions, which are later converted into copper solid of high purity at the other electrode. 6. The plating of pure copper will occur at the cathode where oxidation occurs. O cathode where reduction occ occurs. O anode where reduction occurs. O anode where oxidation occurs. 7. During the operation of this cell O the total energy of the system decreases. O the pH of the electrolyte increases. O the predicted net cell potential is 0.00 V.

Can you help me understand how to get the dilution factors for each tube, please?

out of Express your answer with three significant digits. Do not include units! g/mol A sample solution has a concentration of 12.4% by mass. What mass of solute (in g) is present in 50.0 g of this sample solution? Express your answer with three significant digits. Do not include units! g + Chemistry 20 Final Exam Equation Sheet (click to open) page 1 11

A solution of potassium chloride in water boils at a certain temperature. What could be done to raise the boiling point of this solution?

Understanding how solubility varies with temperature and pressure.

Activity 2. Complete the table to prepare the given solutions with different concentrations: Solutions Volume Solute (if Mass Solute Volume of Water liquid to be added A. 5% by volume, 25 mL HNO3 solution NG PAS NGSOD