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If it takes 3.50 minutes for the concentration of the reactant in a first order reaction to drop in concentration from 1.20M to 0.400M, how long will it take for the concentration to drop from 0.400M to 0.200?
Predict the products of the following acid-base reactions, and predict whether the equilibrium lies to the left or to the right of the equation.
Calculating Kc, Given the amount of reactant in grams in a container at a temperature and amount produced in moles, calculate Kc:
Calculate the pH of a solution prepared by mixing 20.0 mL of 0.01 M HCl with 100.0 mL of 0.10 M HCN. For HCN, Ka = 1.0 x 10- 10. Assume that the volumes are additive.
What is the molality of the 45.0 mass % ethylene glycol (C2H6O2) solution in the water
A patient needs 2.80×10-2 of a sulfa drug. There are 8.00 tablets in stock. How many tablets should be given?
The use of the British thermal unit (Btu) is common in much enginerring work. (1Btu=1054J). A Btu is the amount of heat required to raise the temperature of 1Ib of water by 1 degree F. How many QUADS of energy does world energy consumption quantit..
The concentration of Mg2+ in seawater is 0.052 M. At what pH will 72% of the Mg2 be precipitated as the hydroxide salt? [Ksp for Mg(OH)2 = 8.9 multiplied by 10-12.]
Calculate the amount of heat in kilojoules released when 50 grams of steam at 125 degrees C are converted to 50 grams of ice at -125 degrees
how many liters of H2 would be formed at 530 mm Hg and 15 degrees celcius if 20.5g of zinc was allowed to react?
Draw an oxygen consumption cruve for a suspension of isolated mitochondria when the following compounds are added in the indicated order. With the addition of each compound all of the previously added compounds remain present.
A person weighing 85 kg running at 16 km/hr requires 4245 kJ of energy per hour. How far must this person run to consume the energy contained in 0.770 kg of sugar?
Propanoic acid has Ka of 1.4x10^-5. If we make a solution 0.100M propanoic acid, what concentration of sodium propanoate should be added to give a buffer with a pH of 5.0?
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