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Assuming the volumes are additive, what is the [Cl-] in a solution obtained by mixing 225 mL of .625 M KCl and 615 mL of .385 M MgCl2?
What is the change in energy, Delta E, in kilojoules per mole of hydrogen atoms for an electron transition from n=8 to n=2? Express your answer in kilojoules per mole to three significant figures.
This mixture has density of 1.391g/L and occupies a volume four times as that of pure hydrocarbon. Determine the molecular formula of the hydrocarbon.
Is the monthly fee billed as a whole year without the ability to discontinue the service if I desire prior to the conclusion of the year, without having to forfeit the full year fee.
What is the energy of a violet photon with wavelength 4.0 x 10^-7 m?
At 1 atm, how many moles of CO_2 are released by raising the temperature of 1 liter of water from 20 celcius to 25 celcius
Jerry forgot to record the actual molar concentration of the standard HCL solution ( which was actually 0.044M), However to complete the calculations quickly the 0.05 M concentration was used. Will the reported molar solubility of the Ca(OH)2 be t..
Inhibitors helped to elucidate the electron transport chain. For the conditions below what would happen i) if rotenone were added to a suspension of respiring mitochondria or, ii) if cyanide were added.
The linear molecule FeH2 has been observed in the gas phase. Assume that the iron atom can potentially use s, p, and d orbitals to interact with the hydrogens
The isomerization of methyl isocyanide, CH3NC CH3CN, follows first-order kinetics. The half-lives were found to be 161 min at 199°C and 12.5 min at 230°C. Calculate the activation energy for this reaction.
Why is sodium chloride added to the tea solution before extracting with ethyl acetate? 4 grams of calcium carbonate was added to 90 ml's of water in a flask
Calculate the observed rotation for a solution of a substance (2.0g/mL) that is 80% optically pure. A 2-dm cell is used. The specific rotation for the optically pure substance is +20o.
How is the half-life of a first-order reaction effected by the concentrations of the reactants?
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