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Calculate the pH of 1.00 L of a buffer that is 0.130 M HNO2 and 0.190 M NaNO2. What is the pH of the same buffer after the addition of 1.00 mL of 12.0 M HCl. (pKa of HNO2 = 3.40)Origingal buffer =?After HCl is added =?
calculate delta U and delta H for the process on the basis of 1 mol of gas. Assume for the gas that PV/T is constant, Cv= (5/2)R, and Cp=(7/2)R.
Liquid carbon disulfide burns in oxygen to form carbon dioxide and sulfur dioxide gases. Calculate the number of oxygen molecules it would take to consume 500 molecules of carbon disulfide
if you have 330 ml of water at 25.00 and add 120ml of water at 95 C what is the final temperature of the mixture
a rock contains .441 g of Pb-206 to every 1.00 g of U-238, assuming the rock did nto cantain any Pb-206 at the timeof its formation, how old is the rock?
Acetylene gas (C2H2) is produced by adding water to Calcium carbide CaC2. How many grams of acetylene are produced by adding water to 5g CaC2?
Why does the absolute refractory period occur and What is happening in the cell.
Sulfur dioxide gas is oxidized in 50 percent excess air with 70 percent conversion to sulfur trioxide. The gases enter the reactor at 350 oC and leave at 450 oC.
a sample of gas occupies 328 mL at 20 degrees C. What is its volume when the temperature is increased to 45 degrees C.
The ester ethyl p-nitrobenzoate is more reactive towards nucleophilic acyl substitution than ethyl p-methyoxybenzoate.
What are the differences between sub-energy levels and orbitals? (My professor said they were different.)
A substance has a solubility of 350 ppm. How many grams of the substance are present in 1.0 L of a saturated solution.
what volume does .103 mol of N2 gas occupy at a temperature of 27 degrees Celsius and a pressure of 784 mm Hg?
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