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Will the temperature decrease shift the equilibrium toward the reactants or products for a reaction characterized by a positive reaction enthalpy and positive reaction entropy?
Calculate the pH at the 6 points of titration (fraction titrated = 0, 0.25, 0.50, 0.75, 1.0, 1.25). Hint: Since these concentrations are not the same, first calculate the volume of NaOH required to reach the equivalent point.
Aspirin (C9H8O4) is produced through the following reaction of salicylic acid (C7H6O3) and acetic anhydride (C4H6O3). C7H6O3(s) + C4H6O3-> C9H8O4(s) + HC2H3O2
A gas sample has an original volume of 680 ml when collected at 720 mm and 28°C. What will be the volume of the gas sample if the pressure increases to 820 mm and the temperature increases to 55°C?
A mixture of water and graphite is heated to 600 K. When the system comes to equilibrium it contains 0.13 mol of H2, 0.13 mol CO, 0.43 mol of H2O and some graphite
A 5.00 mL sample of isopropyl alcohol has a mass of .930 g whe measured at 20 degrees celsius. What is the specific gravity of isopropyl alcohol?
A sample of neon has a volume of 575 mL when it is at a pressure of 751 mmHg. What will be the volume when the pressure is increased to 1262 mmHg?
In deoxyhemoglobin, Iron atom lies ~0.36 to 0.40 out of the plane of the heme group whereas in oxyhemoglobin it lies of the porphyrine plane. Give reason for this behavious. Talk in terms of coordination number, size and the oxidation state of the..
A student dissolves 1.50g of copper(II) nitrate in water. After adding aqueous sodium carbonate solution which contains 1.80g of sodium carbonate, the student obtains 0.875g of CuCO3 precipitate.
If a space probe weights 39,200 N on the surface of earth, what will be the mass of the probe on the surface of mars.
Calculate the ph when 47.0 mL of 0.309 M of a certain monoprotic weak acid, HA, is mixted with 47.0 mL of 0.309 M of sodium hydroxide solution
If 88 J of heat are added to a pure gold coin with a mass of 20 g, what is its temperature change? Specific heat capacity of gold is 0.128 J/g'C
When 0.052 mol of aluminum sulfate are dis- solved in enough water to make 179 milliliters of solution, what is the molar concentration of aluminum ions?
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