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Na2SO4 * xH2O, the hydrated salt is overheated and the anhydrous salt thermally decompose, one product being a gas; will the reported value of "x" be too high, too low on the unaffected? explain
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The pressure inside a hydrogen-filled container was 2.10 atm at 21C . What would the pressure be if the container was heated to 89C?
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suppose 8.00 g of CH4 is allowed to burn in the presense of 16.00 g of oxygen. How much (in grams) CH4, 02, CO2, and H20 remain after the reaction is complete?
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How many grams of sodium sulfide are formed if 1.20 g of hydrogen sulfide is bubbled into a solution containing 1.60 g of sodium hydroxide, assuming that the sodium sulfide is made in 94.0% yield?
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How many liters of 0.125M H2SO4 are needed to neutralize .170 g NaOH?
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calculate the solubility of BaSO4 in 0.0125 M BaCl2?
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A calorimeter contains 25.0 of water at 11.0. When 2.50 of (a substance with a molar mass of 78.0 ) is added, it dissolves via the reaction and the temperature of the solution increases to 28.0. Calculate the enthalpy change, , for this reaction per mole of . Assume that the specific...
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slogan for berium
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Write the balanced equation and determine the number of grams of water produced when 2.95mL. of pyridine reacts with excess O2 to give water, carbon dioxide, and molecular oxygen.
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How many grams of \rm NH_3 can be produced from 4.32 mol of \rm N_2?
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Sample Questions
- 1. For organic chemistry, what is a concerted shift? How do things like acids or heat affect them? What other factors affect them?
- 2. Which of the following reactions is an acid-base neutralization reaction? Why are the rest of the answers incorrect?
- A. AgNo3 (aq) + NaI (aq) --> AgI (s) + NaNO3 (aq)
- B. S8(s) + 8O2 (g) --> 8SO2(g)
- C. Na3PO4 (s) + 2H2O (l) --> H2 (g) + 2NaOH (aq)
- D. Ca (OH)2 (aq) + 2HI (aq) --> CaI2(aq) + 2H2O (l)
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