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Consider the following mechanism for the oxidation of bromide ions by hydrogen peroxide in aqueous acid solution. Which of the following rate laws is consistent with the mechanism?
1. H+ + H2O2 --> H2OOH+ (fast equilibrium)
2. H2OOH+ + Br --> HOBr + H2O (slow)
3. HOBr + H+ + Br -> Br2 + H2O (fast)
The activation energy for a reaction is found to be 80 kj/mol. calculate the temperature at which the rate will be ten times that of 0 deg. celsius.
Calculate the maximum mass of carbon dioxide that could be produced by the chemical reaction. Be sure your answer has the correct number of significant digits.
Several significant signals have been identified on the spectrum. Assign these signals to corresponding functional groups in the molecule of aspirin
Chemistry - Estimation of Mass Required in a Reaction, With the reaction, CaCO3+2Hcl->CaCl2+H2O+CO2. Using percent by mass what is the weight of HCl needed to react
If all four gases had initial concentrations of 0.650 M, calculate the equilibrium concentrations of the gases.
What is the pH of a solution containing 0.001 M NaHCO3 and 0.002 M NH3? You may assume that both the carbonic acid system
A 500 ml volume of helium gas is at a pressure of 750 mm Hg and has a temperature of 30 degrees celcius. What is the volume of the same gas at STP?
A gas expands and does P-V work on the surroundings equal to 321 J. At the same time, it absorbs 177 J of heat from the surroundings. Calculate the change in energy of the gas.
Calculate the molarity of a solution made by dissolving 0.150 mol Na2SO4 in enough water to form exactly 760 mL of solution.
Rate of reaction for 8H2S +4O2 -> 8H2O + S8, if started with 21.35g of H2S and 15.36g of O2. What is the limiting reactant and how much S8 can be produced.
Chemical analysis of the two compounds reveals that 0.25 mol ACl 2 has a mass of 100.0 g and 0.50 mol BCl 2 has a mass of 125.0 g. Determine what are the molar masses of ACl 2 and BCl 2 ?
You are given a worked wooden item from an archaeological dig believed to date to during the last glaciation. As such, the artifact would be another piece of evidence.
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