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Solid sulfur undergoes a phase transition between monoclinic (m) and orthorhombic (o) phases at a temperature of 368.3 K and pressure of 1 bar. Calculate the difference in gibbs energy between monoclinic sulfur and orthorhombic sulfur at 298 K and a pressure of 1 bar. take the enthalpy in each phase to be given by the following expressions.
Monoclinic phase: entropy = sm = 13.8 + 0.066T (J/mol K)
Orthorhombic phase: entropy = so = 11.0 + 0.071T (J/mol K)
find the specific solubilities (in g/100g H2O) in both cold and hot water for AgCl, PbCl2, and Hg2Cl2.
To identify a diatomic gas (X2), a researcher carried out the following experiement. She weighed an empty 4.2L bulb, then filled it with the gas at 1.30atm and 23.0C and weighted it again. The difference in mass was 6.3 g. Identify the gas
What are the resonance structures for [H2CNO2]-? The problem asks for the major and minor contributors. The answer key says that there are two structures in which the only double bond switches between the two NO bonds
A chemistry lab experiment requires 36.3 g of silver nitrate. How many grams of a 12.5% by mass solution of silver nitrate should be used?
A 1.0 M Na2SO4 solution is slowly added to 10 mL of a solution that is .20 M in Ca^2+ and .30 M in Ag^+. Which compound will precipitate first: CaSO4 Ksp= 2.4 *10^-5 ,Ksp for Ag2SO4 is 1.5*10^-5. How much Na2SO4 solution must be added to initiate ..
Determine if a precipitate forms when the following solutions are mixed. Write the overall equation, the total ionic equation, and the net ionic equation. PbNO3(aq) + 2KI (aq)
At 1 atm, how much energy is required to heat 55.0g of H2O(s) at -22.0 ^degree C to H2O(g) at 123.0^degree C? Please answer in kJ & explain in detail
What mass would carbon disulfide gas (CS2) have if 125 cm3 of the gas at 400°C exerts a pressure of 736 torr?
Liquid phenol (C6H5OH) flows through a pipe with a mass flow rate of 83.0 g/s. Given that the density of phenol is 1.0576 g/cm3
Provided a mixture of three different compounds A, B and C to perform a chromatographic experiment using TLC. Separate experiments with the pure compounds showed the Rf values of A and B
High-purity benzoic acid (C6H5COOH; delta H rxn for combustion= -3227 KJ/mol) is used as a standard for calibrating bomb calorimeters. A 1.221-g sample burns in a calorimeter (heat capacity= 1365 J/degrees Celsius) that contains exactly 1.570 kg o..
According to the activity series, which of these metals will react with most acids to produce H2 gas?
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