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In the experiments described in Problems 21.10 and 21.11 an inverse temperature dependence of the reaction rate was observed, the overall rate of reaction at 70 degrees C being approximately one-thi
What mass of CO2 is produced when 50.0 g of C2H4 reacts completely in the equation C2H4 + 3O2 = 2CO2 + 2H2O
Draw the Newman projection for the most stable conformation of (2R,3S)-2,3-dichloropentane. Please explain how to do this question, thanks in advance.
A solution contains .229 M sodium acetate and .157 M acetic acid. What is the pH of this solution. How is Ka calculated
How many moles of Al(OH)3 are produced when 50.0 g of KOH react completely in the following equation? AlCl3 + 3KOH = Al(OH)3 + 3KCl
How many molecules of H2 are contained in 22.4 liters at 0 degrees Celsius and a pressure of 1.00 x 10^-3 atm
A trisubstituted cyclohexane compound is given below in its chair conformation. Draw the corresponding planar (overhead) representation, using wedge-and-dash bonds to indicate the substituent positi
Looking at the table of first ionization energy, if the n=1 shell held 3 electrons max instead of 2, then the first ionization energy for Li(g) would be around _____ MJ/mol.
When 0.0017 moles of a weak acid are dissolved in enough water to make 0.500 L, the pH of the resulting solution is 5.97. Calculate Ka.
Consider the following equilibrium reaction that has achieved a state of dynamic equilibrium. In a 3.00 L container, the following amounts were determined at 400ºC: 0.0420 mole N2, 0.516 mole H
For the gas N2O calculate the number of grams are present in 1.05E4 mL under a pressure of 801 mm Hg at 56.3 oC.
Draw all stereoisomers of 3-heptene. Position the groups attached to the double bond (120° bond angles) to indicate the stereochemistry.
In the laboratory a student combines 26.4 mL of a 0.182 M potassium bromide solution with 17.2 mL of a .329 M potassium bromide solution. What is the molarity of KBr in the final solution
Identify the likely kinds of intermolecular forces in the following substances: HCL , CH3CH3, CH3NH2, Kr
Draw the Newman projection for the most stable conformation of (2R,3S)-2,3-dichloropentane.
Assume that a pure molecule has a specific rotation of -20 degree. An impure sample of both enantiomers gave a rotation of -4 degree. What is the ratio of (-) molecules to (+) molecules in the latte
Are certain organometals only made in the lab and not made through natural processes (made in the environment due to pollution)
Why isn't HBrO a stronger acid than HBr. Doesn't the acid strength increase with the amount of oxygens.
How would you calculate the pH of a mixture made from adding 20.0 g of NaCH3CH2COO and 20.0 g of CH3CH2COOH to 100.0 mL of 0.10 M HCl.
A 1M soultion of sodium benzoate has a ph of 9.11. what is the value of Ka that would be calculated for benzoic acid based upon this measurement
If you mix K2HPO4 with NaAc (sodium acetate), what is the net ionic equation for the (potential) H+ transfer? Will it take place spontaneously
It is found that 4.68e-06 g of Nd2(CO3)3 dissolves per 100 mL of aqueous solution at 25 oC. Calculate the solubility-product constant for Nd2(CO3)3.
A solution of Na3AsO4 is added dropwise to a solution that is 0.0643 M in Bi3+ and 0.000180 M in Cd2+. What concentration of AsO43- is necessary to begin precipitation
For fully protonated (99%) benzoic acid in solution write the henderson-hassalbach equation and calculate the pH.
A chemist must dilute 71.4mL of 296mM aqueous potassium dichromate (K2Cr6O7) solution until the concentration falls to 81.0mM . He'll do this by adding distilled water to the solution until it reac