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The rate constant for the reaction 2HI(g) -> H2(g) + I2(g) doubles on raising the temperature from 683K to 698K. What is the activation energy fro this reaction in kJ/mol?
A bag of potato chips contains 595 of air at 20.0 and a pressure of 765 .Assuming the bag does not break, what will be its volume at the top of a mountain where the pressure is 440 and the temperature is 10.0?
The amount of heat needed to raise the temperature of 25 g of a substance by 15°C is 915 J. What is the specific heat of the substance?
The activity coefficients of the Mg2+ and Cl- ions in this solution. The mean ionic activity coefficients of these ions.
at 400 K, the rate of decomposition of a gaseous compound initially at a pressure of 12.6 kPa, was 9.71 Pa/s when 10.0 % had reacted and 7.67 Pa when 20.0 % had reacted.Determine the order of reaction.
Hard water contains alkaline earth cations such as Ca2+ which reacts with CO32- to form insoluble deposits of CaCO3. Will a precipitate of CaCO3 form if a 250mL sample of hard water having [Ca2+] = 8.0x10-4M is treated with the following
In a titration expirement, if we were to replace KHP as the primary standard with CsHP, would the higher molecular weight of the new standard alter the molar ratio of the standardization of the Sodium Hydroxide titrant
Draw the structure of the isomer of C4H9Cl that is least reactive in an SN2 reaction. Do not consider stereochemistry.
Compute A current is drawn from the cell until 1.20 grams of Ag have been deposited at the Ag electrode. Determine the value of E for the cell at that stage of operation.
The rate law for a hypothetical reaction is rate=k[A]2 When the concentration is 0.10 moles/liter, the rate is 2.7 * 10-5 moles/liter second. What is the value of k?
where r is the radius. Compute the volume of a sphere with a radius of 593 pm. State your answer in units of m3.
Calculate the radiation dosage (in grays) for an 57-kg person that is exposed for 3.0 seconds to a 3.0 Ci source of beta radiation.
a retro calculation of the amount of Ni(Nh3)6Cl2 that is needed if 20mL of 0.10M HCl are used to neutralize ammonia. The number I got was 0.07727 g.
Determine the numbers of moles of S8 that are required to make 0.600 moles of SF4.
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