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The isomerization of cyclopropane to form propene (shown below) is a first order reaction. At 760 K, 85% of cyclopropane changes to propene in 79.0 minutes
a) Calculate the reaction's rate constant (k) at this temperature.
b) Calculate the reaction's half-life (t1/2) at this temperature
A 36.4 L volume of methane gas is heated from 25 degrees celcius to 88 degrees celcius at constant pressure. What is the final volume of the gas?
Water boils at a much higher temperature than all other molecules of similar molecular weight because: it makes very strong hydrogen bonds
the summit of Mt. Humphreys, the highest point in Arizona, is 12,600 ft. How many meters is this
You used 32 grams of Lime away solution in a titration. The titration required 18.06 ml of a KOH solution which had a molarity of 11.4 m KOH. What is the percent of HC1 in the lime away
Back titration with .02127 M Zn2+ at pH 5 reqired 23.54ml to reach the xylenol orage end pt. a 2.00ml sample of unknown was passed thru an ion-exchange column designed to absorb co2+. the Ni2+ that passes thru ion-exchange column was treated with ..
A 15.8 g sample of a nonelectrolyte was dissolved is 104.0 g of water. The solution's freezing point was -1.9°C. What is the molar mass of the unknown compound?
consider the following mixtures. in each case either calculate the pH if the resulting solution is a buffer solution or state why the solution does
Ascorbic Acid (Vitamin C) contains C, H, and O. In one combustion analysis, 5.24 g ... analysis, 5.24 g of ascorbic acid yields 7.86 g CO2 and 2.14 g H2O. Calculate the empirical formula and molecular formula of ascorbic acid given ... [PDF] 112
One a cold day a person takes a breath of 450 ml of air at a pressure of 745 mm Hg and room temperature of 21oC. What is the volume of this air in the lungs at 37oC and 758 mm Hg?
Demonstrate that the moalr enthalpy is equal to the molar energy for a collection of one-dimensilonal harmonic oscillators.
for 1st order problem, at 298k the rate is 3.8X10^-6M/s, and at 350k the rate is 4.2X10^-5 M/s. What is the half life at 360k?
What is the flask's volume?
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