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Use the chemical reactions shown below to answer the following questions. (1 pt) IO3-(aq) + 5 I-(aq) + 6 H+(aq) ? 3 I2 (aq, brown/yellow) + 3 H2O (l) I2 (aq, brown/yellow) + 2 S2O32-(aq) ? 2 I-(aq, colorless) + S4O62- (aq) a. What is the stoichiometric relationship between IO3- and I2? b. What is the stoichiometric relationship between I2 and S2O3 2-? c. What is the stoichiometric relationship between IO3- and S2O32-? d. How will knowing these relationships help you calculate the molarity of the Na2S2O3 solution in Part 1 of this experiment?
Under these conditions, how long would it take for a sample to decompose to 25% of it original concentration?
calculate the mass of ammonium nitrate that should be heated to obtain 100 mL of dinitrogen oxide, N2O, at 1.00 atm and 25 degrees celcius?
Halogenated compounds are particularly easy to identify by their mass spectra because chlorine and bromine occur naturally as mixtures of two abundant isotopes
Calculate the percent yield of the reaction of 205 grams aluminum hydroxide with 751 grams hydrogen sulfate (sulfuric acid), given that 252 grams aluminum sulfate are produced
A solution is prepared from 0.95 grams of H3PO4 ,(Phosphoric acid) and 1.15 grams of HClO4 (perchloric acid) in 150 mili litres of solution then determine how many milliliters of 0.425 M sodium hydroxide( NaOH) is needed.
What is the theoretical yield and percent yield for this reaction under the given conditions?
To what temperature must the specimen be heated and how much Sn should be mixed to the 1.5-kilograms specimen at the temperature of twenty five degree celsius to achieve this state?
What is the procedure for the extractions (to MAXIMIZE THE YIELD) and volumes? (i.e. How much water, NaCl, sodium bicarbonate and in what order)?
Rate Constant with Temperature Changes, Rearrangement of methyl isonitrile to acetonitrile has activation energy of 25.0 kJ/mol and a rate constant of 8.1*10^-4s-1 @ 80 Celsius.
Elements in the first short period are limited by the octect rule whereas those in the higher period can expand their valence shells. Describe what this means, account for this phenomenon and give an example of each.
The temperature of a 35.2 g sample of iron increases from 23.7 C to 29.5 C. If the specific heat of iron is 0.450 J/g-K, how many joules of heat are absorbed.
How many moles of urea (60. g/mol) must be dissolved in 100 g of water to give a 2.5 molal solution?
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