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If the half-life of an element is 5 days and 100 milligrams of that element is initially available, how many milligrams of the element are present after 25 days?
Electrophilic bromination on 3-phenylpropanenitrile occurs preferentially at the ortho and para positions. Assuming substitution at the meta position, draw the three resonance structures of the carbocation intermediate.
Calculate the wavelength of the light in nanometers corresponding to this transition. You can use the following values for your calculations
an automobile gasoine tanks holds 42 kg of gasoline. when the gasoline burns 147 kg of oxygen are consumed and carbon
The half-life of the zero order reaction A ? B is 0.56 minutes. If the initial concentration of A is 3.4 M, what is the rate constant in M/s?
what is the concentration of chromium ion present in a 0.07092 M solution of potassium hydroxide in contact with a large excess of a precipitate
Water solubilities of oxalic acid and sodium oxalate at RT are 10g/100 ml and 3.7 g/100 ml respectively. Could you prepare oxalic acid by adding HCl to a solution of sodium oxalate, cooling it to room temperature, and filtering the resulting mixtu..
Correlate the molar mass, molecular size, and bond polarity of these three gases with the molar volume of a perfect gas. O2, Co2, and H2
Write out the balanced chemical equation that occurs when silver tarnishes in the presence of hydrogen sulfide ( a gas produced in food decay) and oxygen. Water is a by-product. Into which class of reactions does this reaction belong
The fluorocarbon C2Cl3F3 has a normal boiling point of 47.6°C. The specific heats of and C2Cl3F3(g) are 0.91 J/gK and 0.67 J/gK, respectively. The heat of vaporization of the compound is 27.49 kJ/mol.
she decomposes the mixture in the exact same manner as the lab, and isolates 154 mL of water at the end. if the water temperature is 24oC and the atmospheric pressure is 742 torr, what was the percent by mass of mercury oxide in the mixture
gram sample of a gaseous hydrocarbon has a volume of 820 ml when measured at 227 degrees Celcius and 2.50 atm.
a if the electron in a hydrogen atom undergoes a transition from an n 6 level to an n 4 level what is the wavelength
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