Science / Chemistry / Integrated Rate Law: Rate laws like d[A]/dt = -k[A] give instantaneous concentration changes. To find the change in concentration over time, the instantaneous changes must by added (integrated) over the desired time interval. The rate law d[A]/dt = -k[A] can be integrated from time zero to time t to obtain the integrated rate law ln([A]/[A]o = -kt, where [A]o is the initial concentration of A.
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Science / Chemistry / Periodic Law: The periodic law states that physical and chemical properties of the elements recur in a regular way when the elements are arranged in order of increasing atomic number. MORE
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Business / Taxes / Periodic Interest Rate: The periodic interest rate, sometimes called the nominal rate, is the interest rate a lender charges on the amount you borrow. Lenders are also required to tell you what a loan will actually cost per MORE