Chemistry, 09.12.2019 07:31 passions3534ovf6dt
A1.0 ml volume of 0.010 m h2so4 is added to a mixture of 6 drops of 0.010 m hio3, 14 drops of deionized water, and 1 drop of starch solution. a color change in the reaction mixture occurred after 56 seconds. a.) assuming 20 drops per milliliter for all solutions, determine the initial molar concentration of hio3 after the mixing but before any reaction occurs (at time = 0). b. )the rate of the reaction is measured by the disappearance of hio3. for the reaction mixture in this question, what is the reaction rate? express the reaction rate in units of mol hio3/l / sec to correct sig. figs.
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1) this is the structure in the cell nucleus that houses a cell's genetic information
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Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution.calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.
Answers: 1
Chemistry, 22.06.2019 17:30
Upon decomposition, one sample of magnesium fluoride produced 1.65 kg of magnesium and 2.56 kg of fluorine. a second sample produced 1.32 kg of magnesium. part a how much fluorine (in grams) did the second sample produce?
Answers: 2
A1.0 ml volume of 0.010 m h2so4 is added to a mixture of 6 drops of 0.010 m hio3, 14 drops of deioni...
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