What is the minimum number of kilojoules needed
what is the minimum number of KiloJoules needed to change 40 grams of water 100 C to stem at the same temperature and pressure?
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Cortisone is a steroid used to treat joint inflammation. Each cortisone molecule contains 21 atoms of carbon plus additional atoms. The mass percent in cortisone is 69.98%/ What is the molecular weight of cortisone in g/mol?
What does the absorption spectrum of the ligand, ethylenediamine, look like in the visible region which you used in this experiment.
In a certain experiment, 28.0 mL of 0.250 M HNO3 and 53.0 mL of 0.320 M KOH are mixed. Calculate the amount of water formed in the resulting reaction. What is the concentration of H+ or OH- ions in excess after the reaction goes to completion?
A sample of hydrogen gas (H2) is in a 2.98 L container at 708 torr and 19 oC. Express the pressure of hydrogen in atm after the volume has changed to 1.41 L and the temperature is raised to 210 oC.
What is the limiting reactant when 4.5 moles of aluminum react with 6.7 moles of oxygen gas? Show, or explain, all of your work along with the final answer.
Compute the atomic packing factor for the diamond cubic crystal structure (shown in the figure below). Assume that bonding atoms touch one another, that the angle between adjacent bonds is 109.5o, and that each atom internal to the unit cell is p
What is the C2O42- concentration in a solution that is 0.10 M in oxalic acid and 1.0 M in HCl? (Consider that the oxalic acid concentration at equilibrium for this common ion problem is 0.10 M.)
A balloon is filled to a volume of 7.00X10^2 mL at a temperature of 20.0 degrees C. The balloon is then cooled at constant pressure to a temperature of 1.00X 10^2 K. What is the final volume of the balloon?
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