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In an effusion experiment, it was determined that nitrogen gas, , effused at a rate 1.812 times faster than an unknown gas. What is the molar mass of the unknown gas? Elemental analysis of the unknown gas from Part A revealed that it is 30.45% N and 69.55% O. What is the molecular formula for this gas?
More strong base is added until the equivalence point is reached. What is the pH of this solution at the equivalence point if the total volume is 38.0
a perfect gas undergoes isothermal compression which reduces its volume by 2.20 L. the final pressure and volume of the gas are 3.78x10^3 torr and 4.65 L, respectively
Calculate the change in free energy (Delta G) for the combustion of 1 mol of ethane C2H6 in oxygen gas. The products are carbon dioxide and water.
3CuSO4 + 2Fe --> 3 Cu + Fe2(SO4)3 If you place .092 mol of iron filling in a solution containing .158 mol of CuSO4, what is the limiting reactant? How many moles of Cu will be formed.
Complete the following reactions and state the dominant mechanism where indicated: (1S,2S)-1-bromo-1,2-diphenylpropane + NaOCH3 Methanol
Calculate the entropy of unfolding of lysozyme at 25 oC, given that the difference in PCof unfolding is 6.28 kJ/mol/K at both 25 oC and 75 oC. Hint: consider a path of 25 oC (folded)?75.5 oC(folded) ?75.5 oC(unfolded) ?25 oC(unfolded).
Given pKa (acetylene) = 25 and pKa (H2) = 35, predict whether the direction/ position of equilibrium in the following reaction will lie to the right (favors the forward reaction) or to the left (favors the backward reaction)?
Calculate the energy required to heat 1.30 kg of ethane gas (C2H6) from 27.0°C to 78.0°C first under conditions of constant volume and then at a constant pressure of 2.00 atm
determine the structures of Compounds A, B, C, D, and E. Show calculations. Support all of your structure determinations. Student performed a sodium borohydride reduction experiment.
When 24 mL of a 170 mL stock solution containing 1.5 M BaF2 is diluted to 76 mL, what is the concentration of Ba2+ in the new solution
Assume that 50.00ml of 0.100M HCl was added to 125ml of 0.100M sodium acetate. Is the resulting solution a buffer? Why or why not? Calculate the pH of the resulting solution.
A room temperature aqueous solution is 0.10 M in zinc acetate, 0.50 M in strontium acetate and 15.2 M in nickel (II) acetate. At what concentration of carbonate does a solid first appear in the solution?
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