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Phenol is a weak organic acid with Ka=1.0x10^-10. How many grams of phenol do you need to add to 500. mL of water to make a pH=5.75 solution
A gaseous mixture of O2 and N2 contains 36.8% nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 685 mmHg.
What is the theoretical yield of vanadium that can be produced by the reaction of 40.0 g of V2O5 with 40.0 g of calcium based on the following chemical reaction?
The side chains of asparagine and glutamine can undergo hydrolysis in aqueous acid. Draw the reactants and products for the deamination reaction. Name the products.
Calculate the molar solubility of FeCO3 . How many grams of FeCO3 are present in 15.0 L of a saturated solution.
How many grams of dry NH4Cl need to be added to 2.50 L of a 0.800 M solution of ammonia, NH3, to prepare a buffer solution that has a pH of 8.74? Kb for ammonia is 1.8*10^-5.
Calculate the uncertainty in the distance of the electron (in Angstroms) at any point during its 25 Angstrom journey. (HINT: remember velocity = distance/ time)
What is the density of hydrogen gas at 23.0^C and a pressure of 1640 psi?
write out the mechanism for alcoholysis of acetyl chloride with isopropyl alcohol. will steric factors slow this reaction down in a way
The activation energy for a particular reaction is 88 kJ/mol. By what factor will the rate constant increase when the temperature is increased
Consider the exothermic reaction A(g) + B(g) C(g) + D(g). Would you expect the addition of heat to lead to the formation or consumption of A(g)? Why?
A solution is prepared by dissolving 0.16 mol of acetic acid and 0.16 mol of ammonium chloride in enough water to make 1.0 { L} of solution. Find the concentration of ammonia in the solution.
When 35.0 g of an unknown nonelectrolyte is dissolved in 220.0 g of benzene, the solution boils at 83.2°C. Calculate the molecular weight of the unknown nonelectrolyte. The Kb for benzene = 2.53°C/m. The boiling point of pure benzene is 80.1°C.
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