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The rate of reaction indicates the speed at which the reaction can occur. It can be expressed in terms of a change in the concentration of reactants or products per unit of time:
The rate of reaction can be expressed either as a decrease in the concentration of a reactant per unit of time or as an increase in the concentration of a product per unit of time.
rate=concentrationchenge/time change
a) consider the follwing reaction:2A+3B---->3C+2Duse the following data to determine the average rate of raction between time0 s and 20stime(s) 0 20 40[A](M) 0.0800 0.0480 0.0360
express answere in molar concentration persecond to three significant figures.
When 6.50 g of the solid is dissolved in 50.0 g of water, the freezing point of the solution is lowered by 5.23 degrees celsius. What is the composition by mass of the solid?
A growth factor for cells was identified from extracts of rat brain. Preliminary characterization was done on this activity using several methods.
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Calculate [H+] and the pH of the following solutions
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Suppose that a 25-mL sample of a solution is to be tested for I- ion by addition of 1 drop (0.20 mL) of 0.27 M Pb(NO3)2. What is the minimum number of grams of I- that must be present
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