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Consider the accompanying energy diagram.
(a) Does this diagram represent an increase or decrease in the internal energy of the system?
(b) What sign is given to ¢E for this process?
(c) If there is no work associated with the process, is it exothermic or endothermic?
Silver ion reacts with excess CN- to form a colorless complex ion, Ag(CN-)2 , which has a formation constant Kf=2*10^20. Calculate the concentration of Ag+ in a solution prepared by mixing equal volumes of 1.8×10-3M AgNO3 and 0.20M NaCN.
if equal masses of N2 and H2 (7.00 grams each) are combined to produce ammonia NH3, how many grams of ammonia could be produced at maximum yield?
The solubility of nitrogen in water exposed to the atmosphere, where the partial pressure of nitrogen is 593 mm, is 5.3 × 10-4 M. At the same temperature, what would be the solubility of pure nitrogen, at a pressure of 760 mm
Arrange the following sets of compounds in order of increasing heats of vaporization. explain your choices CH3F, HF, and Ne H2S, SiH4, and H202
What are the values of Delta H degree and Delta S degree for dissolution of PbI2? PbI( s) rightarrow Pb^(2 +) ( aq) + 2 I^( -) (aq) You may assume that Delta H and Delta S are independent of temperature
which of the following transition metal complexes is diamagnetic?
calculate the solubility (in mol/liter) of Al(OH)3 in a solution
A buffer (pH 3.70) was prepared by mixing 1.00 mole of formic acid and 1.00 mole of sodium formate to form an aqueous solution with a total volume of 1.00 L.
When 0.78 g of an unknown gas in contained solely in a 560 mL container, the pressure is 780 Torr at 5 degrees Celcius. What is the molar mass of the gas in grams/mole?
Problem- Sodium oxide crystallizes in an ionic structure in which the O^2- ions are in a face-centered cubic lattice and the Na^+ ions are in tetrahedral holes. what is the number of Na^+ ions in this unit cell
Vapors are likely to be non-ideal near condensation temperatures. Would you expect such behavior to make your molecular mass to high or too low?
A laser pulse with wavelength 555 contains 4.40 of energy. How many photons are in the laser pulse?
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