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Calculate the final temperature of 39 of ethanol initially at 14 upon absorption of 698 of heat. (density of ethanol =0.789 )
compute the volume of sodium hydroxide that is required to make a buffer with a pH = 5.77.? given that pKa = 4.77. and initial volume of the acid solution = 1.00 Litre.
In an Fe and Cr voltaic cell where the Fe is in Fe(NO3)2 and the Cr is in Cr(NO3)3; calculate the cell potential at 25 C if the initial concentration in the half cells are as follows [Cr 3+] = 2.45M and [Fe 2+] = .75 M
Give the formula unite that forms from ionic compounds between: 1 Potassium and Nitrogen 2 Aluminum and Phosphorus 3 Aluminum and Phosphorus
What is the minimum concentration of Mg2+ required to begin precipitating Mg(OH)2(s) in a solution of pH 10.82? For Mg(OH)2
Calculate the % atom economy for the following two methods for converting benzene, C6H6, to aniline, C6H5NH2.Method 1: C6H6 + (CH3)3SiN3 + 2 F3CSO3H + NaOH
Calculate the increase in entropy when 3.50 mol of monatomic perfect gas with Cp = 5/2 R is heated from 250 K to 700 K and simultaneously expand from 20.0 L to 60.0 L.
At 700.°C, the total pressure of the system is found to be 3.45 atm. If the equilibrium constant KP is 1.52, calculate the equilibrium partial pressures of CO2 and CO.
Find the concentration of Cu2+ in equilibrium with CuBr(s)and 0.10 M Br
Suppose that the microwave radiation has a wavelength of 10.8 . How many photons are required to heat 205 of coffee from 25.0 to 62.0 ? Assume that the coffee has the same density, 0.997 , and specific heat capacity, 4.184 , as water over this tem..
A 6.50-g sample of copper metal at 25.0 C is heated by the addition of 84.0 J of energy. The final temperature of the copper is ____ C.The specific heat capacity of the copper is 0.38J/g-K.
The t1/2 of a second order reaction is 26.0 hours when the initial concentration of the reactant is 0.256M. How many minutes would it take for the concentration of the reactant to drop from 0.256M to 0.064M
the solubility of oxygen in lakes high in the rocky mountains is affected by the altitude. if the solubility of o2
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