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Consider the following equilibrium for which H = -72.46: H2(g) + Br2(g) ? 2 HBr(g) How will each of the following changes affect an equilibrium mixture of the 3 gases in this reaction? The reaction mixture is cooled. A) The equilibrium will shift towards product and Keq will increase. B)The equilibrium will shift towards reactant and Keq will decrease.
What is the density of lead if a rectangular bar measuring 0.500 in height, 1.55 in width, and 25.00 in length has a mass of 220.9g.
For a chemical reaction that has a positive delta Ho value and a negative delta So value, under what conditions will the reaction proceed spontaneously toward products
What mass of this substance must evaporate in order to freeze 160 g of water initially at 19 C? (The heat of fusion of water is 334 {J/g}; the specific heat of water is 4.18 {J/g c. K}.)
12.00mL of 0.125M of HCl is required to titrate 21.55mL of Mg(OH)2. Calculate the molarity of the unknown base.
Sucrose, C12H22O11, reacts slowly with water in the presence of an acid to form two other sugars, glucose and fructose, both of which have the same molecular formulas, but different structures. C12H22O11 + H2O ? C6H12O6 (glucose) + C6H12O6 (fructo..
Which of the following tests could differentiate between pentanal and 3-pentanone, also what would occur.
What is the chemical definition of a buffer solution? Give an example. 2. The Ka of benzoic acid C7H5O2H, IS 6.5X10^-5. What is the buffer range?
Predicting nuclear stability is important when determining whether or not a nuclear reaction can take place spontaneously. Use the following set of guidelines to predict the nuclear stability of the elements listed below. Stable nuclei have a high ne..
A mixture of CaCO3 and CaO weighing 0.665 g was heated to produce gaseous CO2. After heating, the remaining solid weighed 0.500 g.
Suppose a 500mL solution contains 2.00 millimoles of Co(NO3)2, 150.0 millimoles of NH3, and 150.0 milllimoles of Ethylendediamine (en). What is the concentration of Cobalt 2+ (aq) in the solution?
At 450 Celsius, 5.56 moles of ammonia are place din a 2.00-L vessel and allowed to decompose to the elements. 2NH_3_(g) N_2_(g) + 3H_2_(g)
Provide the structure of an aromatic compound with seven carbon atoms. Draw the molecule on the canvas by choosing buttons from the Tools (for bonds)
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