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A sample of neon effuses from a container in 80 seconds. The same amount of an unknown noble gas requires 163 seconds.Identify the gas
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For the following reaction, 41.3 grams of iron(II) chloride are allowed to react with 139 grams of silver nitrate. iron(II) chloride (aq) + silver nitrate (aq) iron(II) nitrate (aq) + silver chloride (s) What is the maximum amount of iron(II) nitrate that can be formed
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A 25.00ml sample of sulfuric acid, a diprotic acid, was titrated with 24.66ml of aqueous NaOH. Upon evaporation, 0.550g of dry sodium sulfate was recovered. a)Calculate the normality of the sulfuric acid. b) Calculate the normality of NaOH. c) Calculate the molarity of the sulfuric acid.
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moles and mass of solute in 181.6 mL of 0.358 M CaCl2
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is N2(g) +3H2(g) ----> 2NH3 endergonic or exergonic?
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What mass of is needed to precipitate the ions from 38.0 of 0.500 solution?
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A. Calculate the molarity of a solution made by dissolving 0.650 grams of in enough water to form exactly 950 of solution. B. How many moles of are present in 200 of a 4.40 10 2 solution? C. How many milliliters of 11.0 solution are needed to obtain 0.250 of HCl ?
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what is this element 1s22s22p63s23p64s23d5?
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How many molecules are in 2.60 mol of sucrose, C12H22O11
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{\rm C_3H_6}(g) + {\rm O_2}(g)\; \rightarrow \;{\rm CO_2}(g) + {\rm H_2O}(g)
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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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