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What is the main overall driving force for any spontaneous reaction or change?
The rate constant for the first-order conversion of A to B is 3.33hr-1. How much time will be required for the concentration of A to reach 75% of its original value?
Determin whether each of the following equation is balanced or unbalanced: a) PCl3(l)+Cl2(g)--->PCl5(s), b)CO(g)+2H2(g)--->CH3OH(l), c)2KClO3(s)--->2KCl(s)+O2(g), d)Mg(s)+N2(g)--->Mg3N2(s).
Calculate the work done (in Joules) when 33.3g of tin dissolves in excess acid at 1.04 atm and 22 degrees C. Assume ideal gas behavior.
Suppose you have a 250 mL glass bulb containing an unknown amount of PCl3 gas. If the bulb contains 1.5 atm of PCl3 at 25C
The Ka for cacodylic acid (C2H7AsO2) is 5.37 x 10-7. An amount (0.1035 g) of this compound is added to 0.5 L H2O. What is the resulting pH of this solution
The heater used to heat 1400 L of air in a hot air balloon is turned off. c) A balloon filled with helium at an amusement park is left in a car on a hot day.
Irradiation of di-t-butyl ketone in a solution of carbon tetrachloride produces pivaldehyd (2,2-dimethylpropanal), chloroform, isobutene, t-butyl chloride, and carbon Monoxide. Suggest a mechanism which accounts for the formation of each product.
Calculate each of the following quantities for this change of state. If it is impossible to calculate a quantity from this given information, state this. (a) q; (b) w; (c) ?U; (d) ?H.
Combustion Analysis of Toluene, Combustion analysis of toluene, a compound containing carbon and hydrogen only, gives 5.86 mg carbon dioxide and 1.37 mg of water. What is its empirical formula?
When calculating the density of your regularly shaped object, which measurement will limit your final result?
Why would a mixture of salts be more difficult to identify than a single salt? For example, copper sulfate, barium nitrate and nickel bromide versus only nickel bromide.
A 0.100 M sample of NiSO4 gave an absorbance of 0.60 at 600 nm in a 1 cm cuvette. What is the nickel concentration of a solution giving an absorbance of 0.20 in the same cuvetter at the ame wavelength
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