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What is a thermodynamic property of a system equal to the sum of its internal energy and the product of its pressure and volume?
Compare your answers with the following: the effective charges on H and Cl in the HCl molecule are +0.178 and -0.178. A. HBr has a smaller dipole moment and a longer bond length than HCl
A gas at room temperature and at a constant pressure of 1 atm is going to be used to heat a material that is at a cooler temperature. You are offered the option of using 1 mol of argon (Ar) gas or 1 mol of nitrogen (N2) gas for this purpose. Which..
The enthalpy of combustion for propane is -2044 kJ/mol. How many liters of propane (at STP) must be burned in order to convert 359 grams of ice initially at -5°C to liquid water at 76°C
A sample of air at 10.0 atm is heated from 575 K to 750 K. If the volume remains constant, what is the final pressure
Given the parent compound, draw the mass spectrum fragment that is observed at m/z 91. Include any hydrogen atoms and the charge.
Calculate P,V and T for initial and final states of each process and produce a plot of the two processes on a P,V diagram. Without resorting to equations, explain why the result for part (b) is greater than or less than the result for part (a).
waters heat of fusion is 80. rmcalg its specific heat is 1.0matrixrm fraccalg cdot circc and its heat of vaporization
A copper cube measuring 1.58cm on edge and an aluminum cube measuring 1.68cm on edge are both heated to 56.4 degrees C and submerged in 100.0mL of water at 21.6 degrees C. What is the final temperature of the water when equilibrium is reached? (As..
This is due to the fact that the hydrate is a deep magenta color while the anhydrous form is a pale blue. As the humidity level changes, the color changes as well. What is the mass percent water in cobalt(II) hexahydrate
The age of a rock can be estimated by measuring the amount of 40Ar trapped inside. The calculation is based on the fact that 40K decays to 40Ar by a first-order process. It also assumes that none of the 40Ar produced by the reaction has escaped fr..
A certain anesthetic contains 64.9 percent C, 13.5 percent H, and 21.6 percent O by mass. At 120°C and 750 mmHg, 1.00 L of the gaseous compound weighs 2.30 g. What is the molecular formula of the compound
A 25 ml of sample of 0.150M benzoic acid is titrated with 0.150M NaOH solution. Explain what is the pH at the equivalence point?
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