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An ideal gas undergoes a reversible isothermal expansion at 96.6°C, increasing its volume from 1.76 L to 3.55 L. The entropy change of the gas is 19.7 J/K. How many moles of gas are present?
what is the freezing point of a solution of 1.17 g of 1-naphthol c10h8o dissolved in 2.00 ml of benzene at 20degc? the
reaction vessel initially contains 153 torr of water at 700.0 {\rm K} in contact with excess solid carbon, find the percent by mass of hydrogen gas of the gaseous reaction mixture at equilibrium.
Using the dumas method, you find that a sample weighing 71.6mg gives 3.84mL of nitrogen gas at 23 deg.celcius and 785 mmHg. What is the volume of nitrogen at STP?
A solution of Ba(OH)2 has concentration of 0.125M. What is the hyrdronium ion concentration. What is the pH.
Write the balanced chemical equation for the following reaction. Phases are optional. Solid iron(II) hydroxide decomposes to form solid iron(II) oxide and liquid water.
if the reaction rate doubles when the temperature is increased to 35 circ rm c what is the activation energy for this
If you are given a Beer's Law plot and a value for the absorbance of an unknown solution how will you determine the concentration of the unknown solution
determine the theoretical yield and the percent yield of ethanol if 684 g of sucrose undergoes fermentation and 349 g of ethanol is obtained
For a 5.0 gram sample of each of the following, what weight of water will be lost if the sample is heated to constant weight: CoCl?*9H?O; CuSO?*5H?O; ZnSO?*4H?O; BaCl?*2H?O.
The molar heats of sublimation and fusion of iodine are 62.3 kJ/mol and15.3 kJ/mol, respectively. Calculate the molar heat of vaporization of liquid iodine.
How many molecules of acetylene (HCCH) react with 146 molecules of oxygen to produce carbon dioxide and water?
The equilibrium constant kp for the following reaction is found to be 4.31 *10^-4 at 375 degrees C. N2(g)+3H2(g) 2NH3(g) Calculate the partial pressures of all species when equilibrium is reached.
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