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A total of 2.00 mol of a compound is allowed to react in a foam coffee cup that contains 172 g of water. The reaction caused the temperature of the water to rise from 21.0 to 24.7 C. What is the enthalpy of this reaction? Assume that no heat is lost to the surroundings or to the coffee cup itself.
Consider that there is 26.38 g NaCl in a solution that has a total volume of 1,780 mL with a density of 0.8495 g/mL. A) What is the molarity of NaCl B) What is the mass/mass % C) What is the molality
What is the hydrogen ion concentration of a solution when 2.334ml of acetic acid (60.05 g/mole) and 2.082 grams of sodium acetate (82.04 g/mole) are added to 500ml of water?
The catalytic converter on your automobile contains small amounts of a precious metal catalyst. Which of the following components would you expect to be decreased in your tailpipe emissions.
How are the following aspects of a reaction affected by the addition of a catalyst. 1) activation energy of the reverse reaction A) Increased B) Decreased
The density of the hydrogen peroxide solution is 1.01 g/ml and the solution contains 3.40% H2O2 by mass. The vapor pressure of water at 24 celsius is 22mmHg. Based on this data and information calculate the molar volume at STP.
what is the K value for compound Z in the biphasic system, 2) how much do you remove in each individual extraction
The solubility of silver chromate, which has a Ksp equal to 9.0e-12 at 25 degrees celsius, is determined in water and in two different solutions. Predict the relative solubility of silver chromate in the three solutions
What is the energy difference between the staggered and eclipsed conformations of 2,2,-dimethylpropane if the eclipsing cost of Me and H is 6 kJ/mol
Methane reacts with oxygen to form carbon dioxide and water as shown:. determine how much methane must have reacted If 72 grams of water is formed,?
at 700ordmc keq 0.0152 for the following reaction2so2g o2g 2so3gwhat is numerical value of the equilibrium constant
For pyridine at 13.08 K, Cp=4.448 J/(mol*K). Assuming that the Debye formula for the heat capacities of crystals at low temperatures applies to pyridine at temperatures below 13.08 K, calculate the absolute entropy of pyridine at 13.08 K.
Calculate the new vapor pressure of water at the same temperature when 740 torr of dry air is added to the container in which the liquid water is held. What is the percent change?
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