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The energy difference of 3.8 kJ/mol between gauche and anti butane corresponds to an equilibrium constant, Keq, of approximately 1.9. Calculate the percentage of each conformer at equilibrium.
Calculate the number of moles and the mass of sodium carbonate present in the mixture. (Formula weight of sodium carbonate is 106g/mol)
This flask is then connected to a second flask, which is evacuated and has a volume of 630. mL. The gas is subsequently allowed to fill both flasks. What is the final pressure of the gas in the first flask? What is the final pressure of the gas in..
Methanol (CH3OH) can be decomposed to form hydrogen gas and carbon monoxide gas. If 125 grams of methanol is decomposed, and 13.6 grams of hydrogen gas is produced, what is the percent yield of hydrogen gas in this experiment
2.9 mol Fe(OH)3 and 7.7 mol H2SO4 react according to the equation 2 Fe(OH)3 + 3H2SO4 ->Fe2(SO4)3 + 6H2O. If the limiting reactant is Fe(OH)3, calculate the amount of Fe2(SO4)3 formed.
A 250.0ml sample of air at 100.0 K is warmed to 200.0 K at constant pressure. What is the volume of the air sample at the new temperature.
Calculate the molarity of each of the following solutions: (a) 29.0 g of ethanol (C2H5OH) in 545 mL of solution, (b) 15.4 g of sucrose (C12H22O11) in 74.0 mL of solution, (c) 9.00 g of sodium chloride (NaCl) in 86.4 mL of solution.
Would it be safer to store a nickell (II) chlorides solution in a lead container or a chromium container?
(1.) Determine the pH of this buffer. (2.) Some solid sodium hydroxide is added to this buffer system and the new pH is measured as 4.74. How many grams of NaOH were added? (Assume the total volume remains unchanged)
What quantity of heat energy transfer is required to vaporize 0.500 mL of mercury at 357 °C, its normal boiling point? The density of Hg (l ) is 13.6 g/mL.
The equation for lowering the freezing point of a solvent is given in your manual. Given that the freezing point for the pure solvent is 79.5 , the molality is 0.15 , and the freezing point depression constant is 6.9 , determine the freezing tempe..
Calculate the pH at the equivalence point in the titration of 68 mL of 0.10 M methylamine (see Table 15.4) with a 0.20 M HCl solution.
Determine the delta G associated with the dissociation of 5.0g of C76H52O46 at room temperature in 50mL of pH=7.55 buffered solution that has already had 2.5g C76H52O46 dissolved into it.
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