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The mass of a helium atom is 4.0026amu, and its average velocity at 25°C is say, using your GU-ID (Example G000abcde, yours for this problem is GU-ID G00071922, a.bcX 10^3m/s. (for your use the first three non zero digits) What is uncertainly in meters in the position of a helium atom if the uncertainty in its velocity is 1%?
What is the pressure in millimeters of mercury of 0.0100 mol of helium gas with a volume of 211 mL at a temperature of 50^circ C?
A concentration cell is built based on the following half reaction by using two pieces of zinc as electrodes (each weighing 100.0 g), two Zn2+ solutions
What is the molarity of the solution if 310 of the solution reacts with magnesium to produce 7.40 of gas measured at STP?
Calculate the extent of reaction at gel point for a mixture of 0.8 moles of pentaerythritol , 0.5 moles of ethylene glycol and 2.0 moles of phthalic acid.
For a van der Waals gas, use the thermodynamic equation of state to find [dU/ dV]T. Compare your result to the corresponding value of the same derivative for an ideal gas. Explain the difference.
If a 1.00 L flask is set up with an initial concentration of 0.391 mol/L COCl2, calculate the equilibrium concentration of carbon monoxide in mol/L.
Mg metal is considered an active metal,in that it spontaneously reacts with an HCl solution.silver(Ag),however, does not react with the HCl solution to any appreciable extent.using the table of standard reduction potentials, briefly explain why th..
Then use the estimate to calculate the heat of formation of ethanol from the heats of formation (in KJ/mol) of CO2: -?394, and H2O: -?242.
What is the value of deltaH0 (in kJ) for the reaction described below. Assume the reaction is performed at 250C. C2H2 (g) + 2H2 (g) -----> C2H6 (g) a. - 248 b. - 311 c. - 173 d. 236
We wish to prepare a buffer of pH 10 using common laboratory reagents. How many mL of 6M HCl would we have to add to a solution prepared by adding 100 mL of 15M NH3 to 200 mL of water?
The excess I3- was titrated with 50.00 mL of a 0.02000 M Na2S2O3 solution. What was the mass percent of arsenic trichloride in the original sample?
a calorimeter contains 27.0 ml of water at 13.0 circc. when 1.30 g of rm x a substance with a molar mass of 81.0 gmol
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