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A first order reaction has k = 0.440 min-1 and the initial concentration of reactant is 0.840 M. What is the concentration of the reactant after 1.00 minute? A second order reaction has k = 7.35 X 10-3 M-1sec-1 and the initial concentration of reactant is 0.120 M. What is the concentration of the reactant after 10.0 minutes?
Calculate the pH after the following amounts of NaOH are added. A) 0mL NaOH added( before the titration started)
What is the value for the rate constant, k? What is the concentration of urea in this solution after 4700 seconds if the starting concentration is 0.495 M?
When 1.0 g of gasoline burns, 11500 calories of energy are given off. If the density of gasoline is 0.74 g/mL, how many kilocalories of energy are obtained from 1.1 gallons of gasoline?
Draw a circuit diagram that has two resistors in series with a DC voltage source. If resistor one (R1) is 758 kohms and resistor two (R2) is 712 kohms, then what is the current flowing through the circuit if the voltage is 8.49 V?
What is the molality of a solution of aluminum nitrate that contains 31.0 g of Al(NO3)3 dissolved in 295.0 g of water? Use molar masses with at least as many significant figures as the data given. What is the molality of each of the ions in soluti..
A solution of ethanol (C2H5OH) in water is prepared by dissolving 69.8 mL of ethanol (density = 0.79 g/cm3) in enough water to make 250.0 mL of solution. What is the molarity of the ethanol in this solution?
A student made a bottle of 6 M NaCl solution in the morning and then stored it in the refrigerator. In the afternoon, he took out the bottle and found NaCl crystals at the bottom of the bottle. Can you explain why the crystals formed
An electric power station annually burns 3.0 x 10^7 kg of coal containing 2.4 percent sulfur by mass. Calculate the volume of SO2 emitted at STP.
Write balanced net ionci equations for the following electrolysis reactions using platinum electrodes 1. aquos potassium fluoride
What type of reaction mechanism will this reaction undergo with the 3,4-dimetyl-3-hexanol substrate (SN1, SN2, E1, or E2)? and show the products of the reaction
When a 4.25-g sample of solid ammonium nitrate dissolves in 60.0g of water in a coffee-cup calorimeter, the temperature drops from 22.0 degree C to 16.9 degree C.
How many moles of O2 are needed to burn 1.05 mol of C8H18
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