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3.25 grams of Mg is dropped into 125 mL of hydrochloric acid. The initial temperature of the calorimeter is 18.5°C and the final temperature is 25.6°C. Assume that the heat capacity of the calorimeter is 4.86 J/g°C. Calculate the enthalpy of the reaction.
Mg + HCl -> MgCl2 + H2
Calculate the capacity factor for decane on HP-1 column (25 m length, 0.25 mm I.D., 0.5 mkm film thickness) at 120 C. Explain.
Using the data on protonation of nucleotides and phosphoric acid species, explain why the double helix of DNA is disrupted when the pH of solution is lowered from 7.0 to 1.0.
calculate the change in entropy when 25KJ of energy is transferred reversibly and isothermally as heat to a large block of iron at (a) 0C and (b) 100c.
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since the freezing point of a solution depends on the relative number of particles what would you caclcuate to be the
What molarity of aqueous aluminum sulfate solution can be expected to show the same conductivity as 0.015 M Na2SO4 at 18,000 units?
A 325 mL sample of solution contains 25.3 grams of CaCl2. Calculate the molar concentration of Cl- in this solution.
You have a container of pure O2 and N2 at 298K and 1atm pressure. Calculate delta G mixing if 12 mol of pure N2 are added to the mixture of 15 mol of O2 and 15 mol of N2.
A coffee cup calorimeter is being used in this lab despite the fact that one of the reactions produces gas. Calculate the work done using the information
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