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How do I determine the hydronium ion concentration of an aqueous solution with a pH of 2.1?
Ka =
An aqueous solution contains 2.13 × 10-2 M HI(aq). How would I determine these:
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15 grams of NaCl is dissolved completely in a beaker containing 200mL of water. What is the Na+ concentration in moles/liter in the final solution?
For the reaction 2CH4(g)?C2H2(g)+3H2(g) K = 0.170 at 1725 °C. What is K p for the reaction at this temperature? Express your answer numerically. For the reaction N2(g)+3H2(g)?2NH3(g) K p= 3.95×10 -3 at 325 °C . What i ...
1-Write balanced equation for the double-replacement precipitation reaction described, using the smallest possible integer coefficients. A precipitate forms when aqueous solutions of nickel(II) iodide and potassium c ...
You are required to read the following case study and prepare a Project Feasibility Study and Timeline based on the information contained in the case study. Residential Duplex Development Project You own a real estate ...
If 14.40 grams of RbCl are dissolved in water to make a solution of 0.224 L, the density is found to be 1.047 g/cm 3 . Calculate the molality of the solute.
Describe how to assign a Oxidation number from the text: The oxidation number of an atom in an elemental substance is zero. The oxidation number of a monatomic ion is equal to the ion's charge. Oxidation numbers for comm ...
Consider reacting 100.00 mg magnesium with 20 mL of 1 M hydrochloric acid. Which reactant is limiting reagent? What is theoretical yield of hydrogen? express your answer in millimoles.
What was the initial energy level of an electron if it was excited by a photon of wavelength 38.9µm and jumped to an energy level of 10?
In the spring time, a background ozone level of 29.0 ppbv was measured in Edmonton. Convert the mixing ratio of 29.0 ppbv ozone to units of molecules cm-3. Assume a pressure of 1.108 atm and a temperature of 12.5 ºC.
A sample of cobalt (II) chloride hydrate starts with a mass of 3.35 g. After heating, the sample mass is 1.83 g. What is the molar ratio of water to cobalt chloride? What is the correct chemical formula
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