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The addictive painkiller morphine, C17H19NO3, is the principal molecule in the milky jiuce that exudes from unripe poppy seed capsules. Calculate the pH of a 0.0227 M solution of morphine, given that Kb = 7.9E-7.?
b) What is the pH of a 0.0659 M solution of NH4Cl?
Calculate the molarity of a solution of glycerol made by dissolving 66.000 mL glycerol at 15 ^circ {rm C} in enough water to make 400.00 mL of solution.
In the combustion reaction of 149 g of propane with excess oxygen, what volume of carbon dioxide if produced at STP?
An average home in Colorado requires 20. GJ of heat per month. How many grams of natural gas (methane) must be burned to supply this energy. CH4(g) + 2O2(g) ? CO2(g) + 2H2O(l) ?H°rxn= -890.4 kJ/mol
Calculate the final temperature of 32 mL of ethanol initially at 11 degrees C upon absorption of 562 J of heat.
What volume of hydrogen gas is produced when 0.829 mol of iron reacts completely according to the following reaction at 0oC and 1 atm?
Isotopes of elements are atoms of the same element that vary in the: 1,number of electrons associated with the nucleus. 2,number of neutrons in the nucleus. 3,number of atoms in a molecule. 4,number of protons in the nucleus.
Calculate the concentrations of all species in a 1.73 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4× 10-2 and Ka2 = 6.3× 10-8.
At a certain temperature, the pH of a neutral solution is 7.45. What is the value of Kw at that temperature
The density of this solution is 1.08 g/mL. Calculate the molarity, molality, weight percent, and mile fraction of the glucose solution.
the wavelength of light absorbed by rhodospin rhodopsin is the pigment in the retina rod cells responsible for vision
A calorimeter contains 26.0mL of water at 14.0\, ^{\circ}C . When 2.30g of \rm X (a substance with a molar mass of 46.0g/mol ) is added, it dissolves via the reaction rm X{(s)}+H_2O{(l)} \rightarrow X{(aq)} and the temperature of the solution incre..
Complete combustion of 4.80 g of a hydrocarbon produced 14.7 g of CO2 and 7.02 g of H2O. What is the empirical formula for the hydrocarbon?
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