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A sample of gas in a cylinder has an initial volume of 56.0 L , and you have determined that it contains1.60 moles of gas. The next day you notice that some of the gas hasleaked out. The pressure and temperature remain the same, but thevolume has changed to 14.0 L . How many moles of gas (n2) remain in the cylinder?
Assume that you have a cylinder with a movable piston. What would happen to the gas pressure inside the cylinder if you do the following
A gaseous mixture of O2 and N2 contains 40.8 % nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 625 mmHg ? Express you answer numerically in millimeters of mercury.
In an endothermic reaction, in going from the reactants to the products at the same temperature, the value of q is negative.
Calculate the expectation values of x and x^2 for a particle in the state n=2 in a square-well potential?
Use qualitative molecular orbital theory to explain why Na2O2 is diamagnetic and KO2 is paramagnetic (use the appropriate diagram from the notes. Use MO to explain the nature of the oxygen-oxygen bond in the complex anions). What is the oxygen-oxy..
Which acid is present in lemon ? marlic acid 2 citric acid 3 lactic acid 4tartaric acid
Does each of the following statements describe a simple enzyme or an enzyme that requires a co factor
light of wavelength 221nm striking a sample of tungsten causes electrons to be ejected with a speed of 6.04x10^5 m/s. calculate the work function of tungsten
Define why thin layer chromatography (TLC) would be Utilized after an etherification reaction where methylbenzoate is synthesized from benzoic acid and methanol.
Calculate the number of grams of sulfuric acid present in the mixture after the reaction is complete. Calculate the number of grams of lead II sulfate present in the mixture after the reaction is complete.
Chrysotile has the following percent composition: 28.03% Mg, 21.60% Si, 1.16% H, and 49.21% O. The molar mass for chrysotile is 520.8 g/mol
NH3 is a weak base (Kb=1.8 x 10^-5) and so the salt NH4Cl acts as a weak acid. What is the PH of a solution that is 0.049 M in NH4Cl?
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