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Calculate the pH during the titration of 40mL of .1M HCl with .1M NaOH solution after the following additions of base:a. 23mLb. 39.7mLc. 51mL
A copper wire with a mass of 4.32 g reacts with sulfur to form 5.41 g of a copper sulfide compound. a) Determine the number of moles of copper and sulfur in the compound. b) Determine the empirical formula of the product.
can someone write out and solve the Huckel MO approximation for the treatment of the pi electrons in ethane
the ei mass spectrum of cocaine r1 ch3 r2 ph is shown below.a. for the four highest-mass fragments what masses are
if you have 380.00 ml of water at 25.00 degrees celcius.and add 130 ml of water at 95.00 degrees celcius, what is the final temperature of the mixture?
Write molecular, complete ionic, and net ionic equations for the reactions that occur , if any, when solutions of the following substances are mixed
determine what would be its temperature after absorption of 9.4 10-2 kwh of heat if 1.45 l of water is initially at
Determine whether each of the examples or phrases describes an essential amino acid, a nonessential amino acid, or both essential and nonessential amino acids. A table of amino acids can be found here.
What is the ratio of ground state energy of atomic hydrogen
Three pure compounds are formed when 1.00 g sample of elements X combine with, respectively, 0.472 g, 0.420 g, and 0.236 g of element Z. The first compound has the formula X2Z3.
The molar heat capacities of Iron and Gold are 24.19 J/mol C and 25.41 J/mol C respectively. What is the final temperature of the water and pieces of metal?
What is the minimum (least negative) cathode potential (versus SHE) needed to electroplate silver onto cutlery in a solution of Ag^+ and NH3 in which most of the silver ions are present as the complex Ag(NH3)2^+ and the concentration of Ag^+(aq) i..
The activation energy for the reaction O + O3 ? 2O2 is 25 kJ/mol, and the enthalpy change is ?H = -388 kJ/mol. What is the activation energy for the decomposition of O2 by the reverse reaction
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