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A flask contains both A and B. Both decompose following first order kinetics with half-lives of 50 and 18 minutes, for A and B respectively. If the concentrations of a and b are initially the same, how long will it take for the concentration of a to be four times b?
calculate the amount of heat required to completely sublime 51.0 g of solid dry ice co2 at its sublimation temperature.
when hydrogen sulfide gas is bubbled into a solution of sodium hydroxide the reaction forms sodium sulfide and water.
Describe reasons the paper's physical properties are different from the water's physical properties.
Find the mass of sodium required to produce 5.68 L of hydrogen gas at STP from the reaction described by the following equation: 2 Na + 2 H2O ® 2 NaOH + H2
The solubility of O2 in water is 0.590 g/L at an oxygen pressure of 15 atm. What is the Henry's law constant for O2 (in units of L atm/mol)
Write a balance chemical reaction showing that Ru2+ disproportionates in aqueous acid. calculate standard potential and the Gibbs Free Energy for the reaction.
Molecular orbital (MO) theory predicts the O2 +2(a +2 CHARGE) ion has a bound order of
Explain why an optically inactive product is obtained when (-)-3-methyl-1-pentene undergoes catalytic hydrogenation.
A solution is made by mixing 49.0 mL of ethanol, C2H6O, and 51.0 mL of water. Assuming ideal behavior, what is the vapor pressure of the solution at 20 degrees celcius
The Specific Heat of a cooling oil is 1.75 J/g. How much heat energy is neededto raise he temp of 2.72 kg of this oil from 23 C to 191 C.
What types of intermolecular forces are present in P4. Dipole is there due to the loan pairs on Phosporus atoms. Or, is it only dispersion forces.
The pressure is changed to 8.75 atm and the gas is cooled to 15 C. Calculate the new volume of the gas using the ideal gas equation.
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