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The accompanying diagram shows how ?H (red line) and T?S (blue line) change with temperature for a hypothetical reaction.
(a) What is the significance of the point at 300 K, where ?H and T?S are equal?
(b) In what temperature range is this reaction spontaneous?
The following data were obtained from experiments to find the molecular formula of procaine, a local anesthetic, which contains only carbon, hydrogen, nitrogen, and oxygen
What is the density of the gas from the previous example if it contains 90% methane 10 % ethane under bottom hole condition (assume T=150 degrees F)
The student titrated 50.0 mL of the 0.10 M H2A with 0.10 M NaOH. After 25.0 mL of NaOH was added, the pH of the resulting solution was 6.70. After 50.0 mL of the NaOH was added, the pH of the resulting solution was 8.00. What are the values of Ka1..
Calculate the difference between the molar enthalpy and the molar internal energy of carbon dioxide regarded as an ideal gas at 298.15K and 754 mmHg
A mixture of 2.0 mol of CO(g) and 2.0 mol of H2O(g) was allowed to come to equilibrium in a 10.0L flask at a high temperature. If Kc-4.0, what is the molar concentration of H2(g) in the equilibrium mixture
What would be the product if a 1:1 mole ratio of benzaldehyde to acetone was used in an Aldol condensation?
Which of the following combinations of peaks appears in the 1H NMR spectrum of diethyl ether, CH3CH2OCH2CH3? a. a triplet and a doublet b. a quartet and a sextet c.
How many grams of calcium chloride are needed to create a heat pack that will reach +30 degrees Celsius above room temp. using 500mL of water
Dentists might use a mixture of 40% N2O and 60% O2 as an initial anesthetic of nitrous oxide(although exact proprtions may vary). Determine the entropy of mixing for 1 mole of such a mixture. Assume ideal gas conditions.
A 24.7 mL, 1.66 M KMnO4 solution is combined with 16.7 mL of 0.721 M KMnO4 solution. Compute the concentration of the final solution.
Given the equilibrium pH will you have successfully reduced each metal ion level to below the MLC? give detailed calculations to support your answer.
Identify how precitipation reactions can be used in the water treatment and purification processes to help maintain a safe municipal water supply.
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