Chlorine dioxide, , is a reddish-yellow gas that is soluble in water. In basic solution it gives and ions. To obtain the rate law for this reaction, the following experiments were run and, for each, the initial rate of reaction of was determined. Obtain the rate law and the value of the rate constant. Initial Concentrations (mol/L) Initial Rate Exp. 1 0.060 0.030 0.0248 Exp. 2 0.020 0.030 0.00276 Exp. 3 0.020 0.090 0.00828

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Express the following number in scientific notation. 0.026890 =

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.