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How does the entropy of the system PbI2(s) + H2O(l) change as PbI2(s) dissolves in water at 25°C?
Explain.
Find the volume in cubic centimeters of a box 25 mm x 12 cm x 0.20 m. How many grams of water should the box hold. The density of water is 1 g/mL and 1 cubic centimeter equals 1 mL.
Write the balanced equation for the complete combustion of each of the following compounds
How many grams of zinc are there in 22.7 g of ZnCl2?
dissolved in water and completely neutralized by the addition of 43.70 mL of 0.303 M NaOH. Calculate the molar mass of the acid, assuming it to be a monoprotic acid.
A container of water is heated from 23.5C to 85.0C. This process requires 21,900 Joules of heat. Calculate the mass of the water. (c=4.184 J/g-C)
A gas has a volume of 590 mL at a temperature of -55.0C. What volume will the gas occupy at 30.0C.
A sample of .755g of NaHCO3 was dissolved in 25mL of .960 M HCl. After heating, 6.7 mL of .601 M NaOH was needed to neutralize the excess acid that was not neautralized
Determine the magnesium content (in ppm) of a 100.00 mL sample of drinking water if the following data were obtained. Titrant is 0.0481 M EDTA, 12.78 mL were used when an aliquot of the sample was at pH 13.0
If the heat of vaporization for Br2 is 29.6 kJ/mol and ΔS° for the vaporization is 88.9 J/mol⋅K, what is the boiling point for bromine?
A+B+C =D The rate law for this reaction is Rate=k [A][C] 2/[B]^1/2 Suppose the rate reaction at certain initial concentration of A, B, and C is 1.14*10^-2 M/s.
what can you conclude about the process of breaking bonds in the liquid as compared to the gas phase? Explain the difference in the heat of formation values between the two phases.
Give a step by step mechanism for the reaction of the following: a. salicylic acid with acetic anhydride/ phosphoric acid b. salicylic acid with methanol/hydrochloric acid
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