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Calculate the concentration of bicarbonate ion, HCO3 -, in a 0.010 M H2CO3 solution that has the step wise dissociation constants Ka1 = 4.3 × 10-7 and Ka2 = 5.6 × 10-11.
Molar Mass of Sulfur based on molality, What would the molar mass of sulfur be based on the following data and information?
What is the percent yield of a reaction in which 282 g phosphorus trichloride reacts with excess water to form aqueous phosphorus acid (H3PO3) and 114 g HCl?
Occupies 6.0 cubic meters at a pressure of 1.5 atm. The pressure is then expanded to 2.0 atm. The temperature remaining constant, what is the new volume of the gas?
50.0 mL of an HCl solution with a pH of 3.5 neutralizes 200.0 mL of a Ca(OH)2 solution.What is the molarity of the Ca(OH)2 solution?
Molecular iodine, I2 (g), dissociates into iodine atoms at 625 K with a first-order rate constant of 0.271 s-1. If you start with 5.2x10^-2 M I2 at this temp.
A mixture of 7.50 g He and 29.5 g Ne has a pressure of 750. mm Hg. What is the partial pressure of each of the gases?
Find pH of A mixture formed by adding 44.0 mL of 2.5×10-2M HCl to 150mL of 1.5×10-2 M HI.
Calculate the ratio of CH 3 NH 2 to CH 3 NH 3 Cl required to create a buffer with pH = 10.14. Express your answer using two significant figures.
A sample of MgCl2 is known to be contaminated with NaCl. A 3.47-g portion of the sample is dissolved in water and treated with an excess of AgNO3 solution.
An unknown mass of each of sand, initially at 24.0, absorbs 1970 of heat. The final temperature is 62.2 degrees C. Find the mass of sand.
Calculate the pH of a solution formed by mixing 65-mL of 0.22M NaHCO3 with 75-mL of 0.15M Na2CO3.
Calculate kc for the reversible reaction and determine what is the activation energy
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