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When Fe(s) reacts with HCl(aq) to form FeCl2(s) and H2(g), 7.40 kJ of energy are evolved for each mole of Fe(s) that reacts.
Write a balanced thermochemical equation for the reaction with an energy term in kJ as part of the equation.
oxygen molecules absorb uv radiation of wavelength less than and equal to 242 nm calculate the frequency and energy of the least energitic of these photons.
molecular orbital theory compare these species with regard to A. their magnetic character B. net number of pie bonds C. bond orber, and D. bond length
The polarogram for 20ml of solution that was 3.65*10^-3 in Cd2+ gave a wave for that ion with a diffusion current of 31.3µA . calculate the percentage in change in concentration of the solution
Both the meta- and para- forms of phenylene diamine are used in the production of Kevlar and Nomex, respectively. Why is a corresponding material with similar properties not made from ortho-phenylene diamine, and why is the ortho-form of the diami..
what is the value for deltaS if 20g of a substance (MW=78.0g/mol) is boiled at 50 degrees C
A sample of nitrogen gas in a 4.4-L container at a temperature of 35°C exerts a pressure of 3.7 atm. Calculate the number of moles of gas in the sample.
Suppose a reaction has a standard Gibbs-free energy of 2.20 kJ/mol, calculate the relative ratio of product to reactant.
A solution is made by mixing 4.6 mL of 0.274 M Fe(NO3)3 and 656.0 mL of water. What is the concentration of Fe3+ in the resulting solution?
which is commonly known as table sugar, reacts in dilute acid solutions to form two simpler sugars, glucose and fructose, both of which have the formula C6H12O6 At 23C
Draw the organic product formed when the structure shown below undergoes
Explain the chemical reactions that have possibly taken place in his body after the exercise. Discuss possible treatments for the freshman and how the treatment works chemically.
Chlorine is widely used to purify municipal water supplies and to treat swimming pool waters. Suppose that the volume of a particular sample of Cl2 gas is 8.60 L at 899 torr and 28°C.
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