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A reaction has an activation energy of 110 kJ/mol and a rate constant, k=1.2 x 10^-12 s-1 at 0?C. At what temperature will the rate constant k=5.1 x 10^-7 s-1
A 14.7-g ice cube is placed into 324 g of water. Calculate the temperature change in the water upon complete melting of the ice. Determine how much heat is absorbed by the melting ice and then use q = mC?T to calculate the temperature change of the..
A fossil is found to have a 14C level of 75.0% compared to living organisms. How old is the fossil
Why does a piece of potato break down a 100% hydrogen peroxide solution faster than lets say a 75% hydrogen peroxide and 25% water
Calculate the number of moles of solute present in each of the following solutions: a)245 mL of 1.50 M HNO3 b) 50.0 mg of an aqueous solution tha tis 1.25 m NaCl c) 75.0 g of an aqueous solution that is 1.50% sucrose by mass
Calculate the expansion work done in kJ against a constant external pressure of 0.961 atm and at a constant temperature of 20°C. Assume that the initial volume of dry ice is negligible and that CO2 behaves like an ideal gas.
When a certain unknown hydrocarbon is completely combusted with excess oxygen, it is observed that 1.12 L of H2O gas and 3.36 L of CO2 are produced at STP. What is the empirical formula of the unknown hydrocarbon
In a reaction mixture at equilibrium, the partial pressure of NO is 119 torr and that of Br2 is 175 torr. What is the partial pressure of NOBr in this mixture? Kp=28.4 at 298 K.
Using concentrations, the solubility of [Ag+] in a solution of 0.01 M KCl is 1.8 * 10-8. Calculate the percent relative error when using concentrations for the solubility of [Ag+] compared to activities
One of the students in lab decided to use two fractionating columns (one on top of the other) instead of just one. How would this: a) affect the separation between hexane and heptane?
Carbon-dating evaluates the ratio of radioactive carbon-14 to stable carbon-12. Given the amount of carbon-12 contained a measured sample cut from the document, there would have been about 1.3 × 10-12 grams of carbon-14 in the sample when the parc..
What is the uncertainty in the energy of the excited state. What is the percentage uncertainty if the energy is measure from the ground state
Draw a structural formula of an alkene or alkenes (if more than one) that undergo acid-catalyzed hydration
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