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For the first-order reaction 1/2 N2O4(g) yields NO2(g); change in H = 28.6kJ the rate constant is k=6.84 x 10 to the 4 s-1 at -23 degrees C, and the activation energy is 53.7 kJ/mol. what is the rate constant at 15 degrees C.
A solution is prepared by diluting 0.0342 mol acetic acid with water to a volume of 8.39 L. What is the pH of the solution
The combustion of one mole of benzene, C6H6, in oxygen releases 3268 kJ of heat. The products of the reaction are carbon dioxide and water.
where it is burned with 12% excess air. Calculate the required flow rate of air in SCMH(standard cubic meters per hour).
You heat the gas until the root mean square speed of the molecules of the sample has been doubled. What will be the final pressure of the gas
Experimentally the rate law is determined to be third order. under what conditions (if any) does your derived rate law agree with the experimental rate law
What is the stoichiometric coefficient for oxygen gas when the following reaction is balanced using the smallest whole number coefficients?C12H26(g) + O2(g) ? CO2(g) + H2O(g)
1-buytyl bisulfate may serve as teh precursor to an ether and an alkene as well as the desired 1-bromobutane. provide
The compound KB5O8·X H2O was analyzed and found to contain 24.6% of water. If the formula weight of this compound is 293.15 g/mol, what is the number of water molecules (X) in the formula?
A buffer that contains 0.55 M base, B, and 0.30 M of its conjugate acid, BH+, has a pH of 8.94. What is the pH after 0.0020 mol HCl is added to 0.25 L of this solution.
The osmotic pressure of the solution is measured to be 8E-4 bar at 25 C. What is the calculated molar mass of the protein?
A solution is made witmlh 20.2ml of CH3OH ( density= 0.782g/ml), dissolved in 100.ml of water (density = 1.00 g/ml). Calculate the concentration in the units of:
Describe the pH of a buffer solution consisting of 100 mL containing 0.1M CH3COOH and 0.125M CH3COO- , both before and after addition of 10 mL of 0.25M HCl. Ka = 1.8 x 10-5.
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