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prepare the balanced chemical equation.
Mercuric oxide, HgO, is used to make the cathode of dry cell batteries.
_____ HgO à _____ Hg + _____ O2How many grams of oxygen would be released when 136.93g HgO decomposes?
A. How many milliliters of a 0.72 MHCl solution do you need to obtain 0.0032 mol of HCl? B. A flask containing 470 mL of 0.50 M H2SO4 was accidentally knocked to the floor. How many grams of NaHCO3 do you need to put on ...
Consider a string with a length of 54.5 cm tied at both end (like on a stringed instrument). If the frequency of the first harmonic on the string is 256 Hz, determine the speed of the wave in the string. Post your answer ...
Question 1 Di-lithium is composed of two lithium atoms. Which of the following statements regarding di-lithium or lithium is FALSE? They oxidize very slowly in air. They remain in the solid state even after getting fragm ...
Pyridine (C5H5N) is a weak base (pkb = 8.74) with an unpleasant, sweet fishy odour. In a titration, 175.0mL of pyridine solution required 13.6 mL of 0.3250M HCl to reach the equivalence point. a) Calculate the pH of the ...
A sample of O2 was collected over water at 25C and .865 atm. If the total sample volume was 2.538 L, how many moles of O2 were collected?
Simple Cubic Packing when r+ MnO has either NaCl type structure or the CsCl type structure. The edge length of the MnO unit cell is 4.47 x 10-8 cm and the density of MnO is 5.28 g/cm3. A) Does MnO crystallize in the NaCl ...
Determine the percent yield of barium sulfate obtained (4.9852g) when 100.0 mL of a 0.2516M aqueous barium chloride is treated with an excess of sulfuric acid? Hydrochloric acid is a by-product.
1. Calculate the grams of Na 2 CO 3 required to prepare 250.0 mL of 0.375 M Na 2 CO 3 solution. 2. The reaction of sodium carbonate with hydrochloric acid produces carbonic acid and sodium chloride. If 25.00 mL of O.0 ...
A cleaning solution is found to have a [OH-] = 3.2 x 10 -12 M. What is the [H 3 O + ] and is the solution acidic or basic?
Carbonic acid (H2CO3) is a diprotic acid withKa1 = 4.2×10-7and Ka2 = 4.8×10-11. Theion product for water is Kw = 1.0 × 10-14. What is the carbonate ion concentration[CO2-3] in a 0.037 M carbonic acid solution?
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