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Write balanced equations that described the formation of thefollowing compounds from elements in their standard states and usethe appendix C to obtain the values of their standard enthalpies offormation (a) HBr (g), (b) AgNO3(s).
a reaction mixture initially contains 0.56 atm co2 and 0.32 atm co. determine the equilibrium pressure of each gas if
2 nas 2 h2ol 2 naohaq h2gthe hydrogen gas generated is collected over water at 25.0degc. the volume of the gas is 535
A reaction has a rate constant of 1.21×10-4 at 25 degrees C and 0.232 at 79 degrees C. The activation barrier for the reaction is 122 KJ/mol. What is the value of the rate constant at 18 degrees C
A 2.53g of solid NaOH is dissolved in 100g of water in a coffee cup calorimeter, all the reagents initially being at 20 degrees Celsius. Calculate the final temperature of the solution obtained, given the fallowing information: NaOH (s) ----> NaOH..
Using the following bond energies Bond Bond Energy (kJ/mol) C?C your knowledge C-H 413 O=O 495 C=O 799 O-H 467 estimate the heat of combustion for one mole of acetylene
What is the freezing point of water under a pressure of MPa? Assume that the density of ice is 0.915 g.cm^-3 and that of liquid water is 0.998 g cm^-3 at this pressure
Sodium sulfate dissolves as follows: Na2SO4(s) → 2Na+(aq) + SO42- (aq). How many moles of Na2SO4 are required to make 1.0 L of solution in which the Na concentration is 0.10 M?
Sirius, the brightest object on the night sky besides the moon and the larger planets and, is a two-star system. The surface temperature of the larger one (Sirius A) is 9940 K. What's the wavelength of the maximum in its emission spectrum. What co..
what mass of ccl2f2 substance must evaporate in order to freeze 135 g of water initially at 15 degrees celsius? the
what measuring device would you use to measure the volume under each of the conditions described below? in some cases
What was the nucleophile generated? What are the other products that can be formed in the presence of sulfuric acid?
What is the concentration of CH3COOH (Ka = 1.8x10-5) in 50.0 mL of a 0.0187 M CH3COOH solution
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