An aqueous solution contains 0.243 M hydrosulfuric acid and 0.134 M hydroiodic acid. Calculate the sulfide ion concentration in this solution. [s²] = mol/L. Submit Answer Retry Entire Group 6 more group attempts remaining

A mountain lake that is 4.0 km × 6.0 km with an average depth of 75 m has an H+(aq) concentration of 1.3 × 10−6 M. Calculate the mass of calcium carbonate that would have to be added to the lake to change the H+(aq) concentration to 6.3 × 10−8 M. Assume that all the carbonate is converted to carbon dioxide, which bubbles out of the solution.

The formula for tartaric acid is preferably written as H2C4H4O6 rather than as C4H6O6. Explain why.

ssume a highly magnified view of a solution of HCI that allows you to “see” the HCl. Draw this magnified view. If you dropped in a piece of magnesium, the magnesium would disappear, and hydrogen gas would he released. Represent this change using symbols for the elements, and write the balanced equation.

You wish to prepare 1 L of a 0.02-M potassium iodate solution. You require that the final concentration be within 1% of 0.02 M and that the concentration must be known accurately to the fourth decimal place. How would you prepare this solution? Specify the glassware you would use, the accuracy needed for the balance, and the ranges of acceptable masses of KIO3 that can be used.

Acid Data table Initial volume of Vinegar Percent acetic acid in vinegar sample HG mc Base Data table mol base = mol acid I mol acid I mol base Concentration of NaOH solution Q.125M Initial volume of NaOH. in buret 2.50ml 0.98 15.30ml Mol of acetic acid 0.016 mo Final volume of NaOH in buret n mol and 0.016 L 54.00mL 50.ML 41.90mL Molacid 16ml yoland (2) ook Molarity of Acetic acid 10.994 М Mol NaOH added 51.5 49.12 Post-Activity questions 26.6 1. Does your molarity of acetic acid agree with the percent of acetic acid present in the sample? Use a calculation to determine this 2. At what pH does phenolphthalein turn pink? Do you think this causes an error in the measurement of the equivalence point?

The pOH of an aqueous solution of 0.559 M hypochlorous acid, ( K₁ (HClO) = 3.5 × 10−8) is Submit Answer Retry Entire Group 2 more group attempts remaining

Match the chemical equation with the type of reaction. Sg(s) + 24 F2(g) → 8 SF6(g) 1. Single Displacement 2 C5H10(g) + 15 O2(g)- 10 CO2(g) + 10 H20(g) 2. Double Displacement 3. Synthesis Na2SO4(aq) + Ba(BrO3)2(aq) - BaSO4(s) + 2 NaBrO3(aq) 4. Decomposition CaO(s) + CaSO3(s) SO2(g) 5. Combustion

How can we fill in the table ?

Concentrated phosphoric acid is 90% H;PO, by mass and the remaining mass is water. The molarity of H;PO, in 90% H;PO, is 12.2 M at room temperature. a. What is the density of this solution at room temperature? b. What volume (in mL) of this solution is needed to make a 1.00 L solution of a 1.00M phosphoric acid?