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Consider the reaction at 25C 2NO2 --> 2NO + O2 The overall rxn rate = k[NO2]2. The rate constant, k = 1.4 × 10^10 M-1 s-1. If 3.8 moles of NO2 are initially present in a sealed 1.00 liter vessel at 25 C, what is the half-life of the reaction?
Draw the carboxylic acid produced from the acid hydrolysis of butyl acetate (butyl ethanoate)
suppose a saturated solution of Barium Flouride contains 1.47*10^-2 M F-. What is the Ksp of the BaF2?
A sample of gas occupies 1.55L at STP. Remember, pressure at STP is 1.0 atm. What will the volume be if the pressure is increased to 50 atm while the temperature remains constant
A 91 gram solution of silver nitrate contains 8 grams of AgNO3. What is the percent by mass of silver nitrate in this solution.
Use the Henderson-Hasselbalch equation to calculate the pH of a 250 mL solution of 0.3 M acetic acid (pKa = 4.76; assume it is initially fully protonated)
What is the name of the haemoglobin variant? Would this haemoglobin demonstrate a left or right shift on an oxygen dissociate curve ? Fully justify your answer.
We know Pro can interrupt an a-helix, chemically, do you think it will cause any unusual problems in the determination of, angiotension II sequences? Explain.
On a cold dry morning after a frost, the temperature was -5C and the partial pressure of water in the atmosphere fell to .30 kPa. Will the frost sublime? What partial pressure of water would ensure that the frost remained?
The mixture is added to 130g of water. If the solution described in the introduction is cooled to 0 degrees celsius, what mass of KNO3 should be cystallize
Methyl red is an indicator that changes between yellow and red. In solution methyl red (HMR) dissociates as follows:
Given the following heats of formation, delta H f, in kJ per mole, as obtained from a table of deltaHf data, calculate the delta H for the reaction in part f. Compare your answer with the result you obtained in Part e.
Determine what would be the concentration of the final solution If you take a ten mili litres portion of the stock solution and dilute it to a total volume of 0.250 Litres,?
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