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The equilibrium constant for a certain reaction decreases from 8.51 to 3.3e-2 when the temperature increases from 24°C to 73°C.
1. Estimate the temperature where K = 1.00 for this reaction. T in Kelvin.
2. Estimate the value of ?S° for this reaction. J/K*mol
An FM radio station broadcasts electromagnetic radiation at a frequency of 95.7*10^6 Hz. Calculate the wavelength of this radiation
two molecular ions of about equal intensity at m/z = 180 and 182; IR: 1740 cm-1; 1H NMR: ? 1.30 (3H, t J = 7 Hz); ? 1.80 (3H, d, J = 7 Hz); ? 4.23 (2H, q, J = 7 Hz); ? 4.37 (1H, q, J = 7 Hz).
A 122 piece of metal is heated to 285 and dropped into 84.0 of water at 26. If the final temperature of the water and metal is 58.3, what is the specific heat of the metal.
A first order reaction has an Arrhenius constant for the reaction is 9.4 x 10^10 sec ^-1, and an activation energy of 64.4 kJ. At what temperature (in Celsius) is the rate constant equal to 0.472 sec^-1
A 25.0 g sample of pure iron at 85.0°C is dropped into 75 g of water at 40.0°C. What is the final temperature of water-iron mixture?
Arrange the following elements from greatest to least tendency to accept an electron. Rank from greatest to least tendency to accept an electron. To rank items as equivalent, overlap them.
The density of air at 19 °C is 0.0020 g/ml at about atmospheric pressure. Although air is a mixture, we can take the average molecular weight of the molecules in air to be 27.37 amu. (a) What is the mass of air in the bottle? (b) By how much does ..
why are elements such as Hg, As, Bi, Sb and others first converted to their hydrides prior to sample analysis by Atomic Absorption Spectroscopy?
at room temperature 20 milk turns sour in about 65 hours. in a refrigerator at 3 milk can be stored three times as long
Explain the significance of the chromic acid test. What would you observe in the case of a positive result? Do you expect 9-fluorenol to give a positive or negative result? What about the 9-fluorenone?
An aqueous solution contains metal cations Hg^+2 and Mn^+2 belonging to groups 2 and 3 respectively. Thioacetamide which produces H2S is added and the solution is buffered to a pH of 8 by addition of NH3/NH4Cl
Consider the reaction that occurs when a solution containing hydrochloric acid (HCl) is added to a solution containing the weak base methylamine (CH3NH2).
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