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The rate constant for a first order reaction is 1.8 x 10 to the neg 2 s-1at 742 k and 4.5 x 10 to the neg 2 s-1 at 902 k. what is the activation energy step by step?
consider a sample containing 5 mol of a monatomic ideal gas taken from state a to state b. calculate changeE, changeH,q, and w.
A Chemistry experiment requires 25.2g of silver nitrate, how many grams of a 15.5% by mass solution of silver nitrate should be used
a volume 505 mL of air on a cold winter day at -15 degrees celcius is breathed into the lungs, where body temperature is 37 degrees celcius
An unknown metal hypochlorite salt, M(ClO)2, is subjected to analysis by iodometric titration: the salt is dissolved in dilute sulfuric acid, treated with excess aqueous KI, and then titrated with Na2S2O2 in the same manner as in your experiment
How many grams of dry NH_4Cl need to be added to 1.60 L of a 0.800 M solution of ammonia, NH3, to prepare a buffer solution that has a pH of 8.99? Kb for ammonia is 1.8*10^{-5}.
The B4O5(OH)4^2- ion, present in 5.0 ml of a saturated Na2B4O5(OH)4 solution at a measured temperature, is titrated to the bromocresol green endpoint with 6.51 mL of 0.146 m HCl. How many oles of B4O5(OH)4^2- are present in the sample
The rate of the reaction of methyl ethyl acetate with hydroxide to form acetate ion and ethanol as shown in the following reaction, CH3COOC2H5(aq) + OH-(aq) => CH3COO-(aq) + C2H5OH(aq) was measured at several temperatures and the following dat..
anthraquinone contains only carbon hydrogen and oxygen. when 4.80 mg anthraquinone is burned 14.2 mg co2 and 1.65 mg
What mass of carbon dioxide is produced by the complete combustion of 5.50 grams of hexane, C6H14
Define and give examples of the following: oxidation reactions; reduction reactions; reactions that are neither
Which of the following has the greatest buffer capacity. a) 0.40 M CH3COONa/0.20 M CH3COOH, b) 0.40 M CH3COONa/0.60 M CH3COOH, and c) 0.30 M CH3COONa/0.60 M CH2COOH.
What is the final temperature of the copper and water after they come to thermal equilibrium? (the specific heat of copper is 0.385 J/gxK).
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