A first order reaction has a rate constant of 0342 sec-1 at
A first order reaction has a rate constant of 0.342 sec-^1 at 29.5 degrees C. If the activation energy is 69 kJ, calculate the temperature in degrees C at which the rate constant is 0.428 sec^-1.
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The driver of a car slams on the brakes when he sees a tree blocking the road. With what speed does the car then strike the tree
The balanced chemical reaction for the titration performed in this lab demonstration is: NaCOOH(aq)+NaOH(aq)=Na(CH3COO)(aq)+H2O(l). A basic solution has positive ions and OH- ions like Na+ and OH-.
find the current that flows in a silicon bar of 10 micrometerlength having a 5 X4 micrometer cross section and having freeelectron & hole densities of 10^5/cm^3 & 10^15/cm^3 ,respectively, when a 1V is applied end-to-end. Use Mn =1200cm^2/
A 4 kg block is acted upon by three horizontal forces. 10n (to left) 5n(short arrow to right) 25n to right. what is the horizontal acceleration of the block
A daring ranch hand sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. How long is he in the air
In this problem, we assume that expected sales are independent of the current assets investment policy. Is this a valid assumption? Why or why not?
Suppose the exchane ratee between the US dollar and Swedish krona was 6.3 krona = $1, and the exchange rate between the dollar and the British pound was E1 = $1.64. What was the exchange rate between Swedish kronas and pounds?
By the end of the month, it has unexpectedly dropped to 94 cents. Has your company made a gain or a loss as a result, and by how much?
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