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Given 20g of each of the gases co2, h2 and Ne in a flask with a totally pressure of 2.50 atmm what is the partial pressure of each gas?
At 2000 degrees celcius the equiblibrium constant for the reaction 2NO to N2 and O2 is Kc = 2.4 x 103. If the initial concentration of NO is 0.200M, what are the equilibrium concentrations of NO, N2, and O?x?
how efficient is the extraction of tea leaves containing 1.0g of caffeine with two 30mL portions of chloroform over that of a single-step extraction? KD= 8.36 at 25 C)
The half-life of plutonium-239 is 24,100 years. How long will it take for a 100 g sample of plutonium to be reduced to 25 g?
A system receives 93 J of electrical work, performs 227 J of pressure-volume work and releases 155J of heat.What is the change in Internal energy of the system?
Write the balanced chemical equation that represents the addition of CL2 to CH3CH=CH2.
Coca-Cola used to contain 0.060% phosohoric acid by mass. Determine the pH of Coca-Coal prior to carbonation.
Hydrogen cyanide is produced industrially by the following exothermic reaction. 2 NH3(g) + 3 O2(g) + 2 CH4(g)---> 2 HCN(g) + 6 H2O(g) Is the high temperature needed for thermodynamic or kinetic reasons
calculate the molarity of an nh3 solution made up of 37.5 g of nh3 in 70.0 g of water. the density of the solution is
A solution is prepared at 25 degrees Celsius between 150 mL of 0.15 M C6H5COOH and 12.5 grams of C6H5COONa. What is the resultion pH of the solution, assuming no volume change.
What is the reason for why a sand bath was used instead of a water bath for this particular pressure reaction? (a) Instructor preference (either could have been used with equal success).
Nicotine in cigar smoke (pH is much more readily absorped through the mucous membranes of the mouth than is nicotine in cigarette smoke pH
a compound containing carbon amp hydrogen atoms has a deep blue color. complete combustion of 288 mg of the compound
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