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A sample of natural gas at STP is 78% CH4 and 22% C2H6 by volume. How many moles of each gas are present in 2.00 L of the mixture. Assume Ideal gas behavior.
Assume that an air conditioner consumes 1.50 X 103 W of electrical power, and that it can be idealized as a reversible Carnot refrigerator. If the coefficient of performance of this device is 2.50, how much heat can be extracted from the house in ..
Draw the structure of the product that results from the reaction of excess hydrogen gas in the presence of a nickel catalyst:
detailed reaction mechanism for the acid-catalyzed hydrolysis of lactose to its component monosaccharides
a 75.0 ml sample of .0500M HCN is titrated with .500 M NaOH. what is the concentration of H+ in the solution after 3.0 ml of .500 M NaOH has been added
Assume that a reaction takes place at 296 K and 306 K. What must the activation energy be for the rate constant to double as described.
Serum taken from a patient being treated with lithium for manic-depressive illness was analyzed for lithium concentration. A reading of 326 units was obtained for the intensity of the 671 nm red emission line.
Draw the neutral major organic product pentanoic anhydride & 2 equivalents of dimethyl amine [HN(CH3)2] given that one equivalent of amine acts as the nucleophile
It takes 49.0 to raise the temperature of an 11.8 piece of unknown metal from 13.0 to 24.5. What is the specific heat for the metal?
When Fe(NO3)3 is dissolved in water, hexaaquiron(III) ions, Fe(H2O)6 3+, forms. Fe(H2O)6 3+ ions hydrolyze in aquesous solution accoring to the equation given below.
The data in the table at the right show a calibration curve for the determination of RNA from its absorbance at 260 nm. Use a spreadsheet and the least-squares method to determine the slope and intercept of the best straight line fit to the calibr..
A 4.20 g nugget of pure gold absorbed 299 J of heat. The initial temperature was 22.0°C. What was the final temperature.
Which of the acids in question #3 would be the best choice to create a buffer with pH = 7.35? If you had 250.0 mL of a 0.20 M solution of the acid, what mass of the corresponding sodium salt of the conjugate base would be required to make the buff..
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