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A 245 mL stock solution contains 2.3 M Ca(CN)2. When 100 mL of the stock solution is diluted to 120 mL, how many moles of CN- ions will be contained in the dilute solution?
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If 22 mL of 5.6 Molarity was spilled, what is the minimum mass of that must be added to the spill to neutralize the acid?
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If 3.80 of vinegar needs 45.0 of 0.135 to reach the equivalence point in a titration, how many grams of acetic acid are in a 1.10 sample of this vinegar?
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how many moles of oxygen are in 55.5 grams of HNO3?
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A certain first-order reaction () has a rate constant of 6.90 10 3 at 45 . How many minutes does it take for the concentration of the reactant, , to drop to 6.25 of the original concentration?
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calculate the specific heat of a substance if a 35 gram sample absorbs 28 joules as the tempature is raised from 292 kelvin to 313 kelvin
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Calculate the mass of each product formed when 220. g of silver sulfide reacts with excess hydrochloric acid.
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CH3CH2CH2CH2COOH is what type of com- pound?
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Which one of the following is the highest temperature? a. 38 C b. 96 F c. 302 K d. none of the above e. the freezing point of water
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Propose the kinds of attractive forces that might bind congo red to cotton fabric.
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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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