A solid mixture consists of 25.5 g of KNO3 (potassium nitrate) and 4.5 g of K₂SO4 (potassium sulfate). The mixture is added to 130. g of water. Use this solubility curve (Figure 1) to answer the questions. Part B. If the solution described in the introduction is cooled to 0 °C, what mass of KNO3 should crystallize? Enter your answer numerically in grams. View Available Hint(s) 15| ΑΣΦ 3 ?

2-Hydroxybutanedioic acid occurs naturally in apples and other fruits. Rank the labeled protons in 2-hydroxybutanedioic acid in order of increasing acidity.

is one able to help with this? please

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

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.

SIZING THINGS UP: For each pair, indicate the LARGER quantity. If the two quantities are equal, write "equal", and if there is not enough information to determine which is larger state "not enough info. Explain your reasoning. YOU MAY NOT USE A CALCULATOR FOR THIS PROBLEM. Use your estimation skills! a. A solution's temperature after an endothermic reaction occurs A solution's temperature after an exothermic reaction occurs (initial temperature = 5°C) (initial temperature = 5'C) %3D b. The final temperature when 50.0 g of ice at O°C is added to 100.0 g of water at 80°C. The final temperature when 50.0g of water at 0°C is added to 100.0 g of water at 80.0°C. C. The specific heat of a material if 500.0J raises the temperature > of 5.0 grams of it by 10.0°C. The specific heat of a material if 500.0J raises the temperature of 12 g of it by 5.0°C.

Which of the following solutions will have the highest concentration of chloride ions? (hint: write down the dissociation of the ionic compounds in water) OA. 0.10 mol/L MgCl2 O B. All of these solutions have the same concentration of chloride ions. O c. 0.10 mol/L LICI OD.0.05 mol/L CaCl2 O E. 0.10 mol/L AICI3

When the unshelled egg was left in distilled water for several days, it became bigger. What would have happened if it had been left in a saturated solution of salt for the same length of time? Explain.

How many grams of chlorine are in 250 milliliters of a 1.50 M MgCl2 solution? Hint: the solubility of MgCl2 is high enough for all of it to completely dissolve. You can assume that the molar mass of dissolved Cl- ions is the same as molar mass of Cl atoms you can look up in the periodic table.

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