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(a) When 120 mg of naphthalene, C10H8(s), was burned in a bomb calorimeter the temperature rose by 3.05 K. Calculate the calorimeter constant. By how much will the temperature rise when 10 mg of phenol, C6H5OH(s), is burned in the calorimeter under the same conditions?
(b) When 2.25 mg of anthracene, C14H10(s), was burned in a bomb calorimeter the temperature rose by 1.35 K. Calculate the calorimeter constant. By how much will the temperature rise when 135 mg of phenol, C6H5OH(s), is burned in the calorimeter under the same conditions? (ΔcH7(C14H10, s) = -7061 kJ mol-1.)
Correct for the water vapor present in the wet dry ice experiment and compare and compare with the mean value for the dry ice experiment. Does the presence of water vapor affect the result?
a solution is prepared using 15.0 ml of 1.0 m hcl and 20.0 ml of 0.5 m hno3. the final volume of the solution is 1.25
What are the steps to determine isotope fractionation between water and vapor at 25 degrees C
Write a balance chemical reaction showing that Ru2+ disproportionates in aqueous acid. calculate standard potential and the Gibbs Free Energy for the reaction.
Hypotonic solutions cause red blood cells to A. shrivel B. burst C. no effect on red blood cells
The Ksp of calcium hydroxide, Ca(OH)2, is 5.02 × 10-6. Calculate the solubility of this compound in g/L.
Calculate how many kilograms of H2 it takes to electrify an average home for a month. Assume there are 30 days in a month. (1 Whr of electricity = 3600 J) Standard Values
From 15 mL H2O2 solution 22.0 mL gas evolved at 28.0 degrees Celcius and 740 Hgmm pressure. Calculate the concentration of the original H2O2 solution in mol/dm^3 unit.
Calculate w (in kJ) when 557 g iron (III) oxide (MM = 159.7 g/mol) reacts with excess carbon to produce carbon dioxide gas at 420 K: 2Fe2O3(s) + 3C(s) ? 4Fe(s) + 3CO2(g)
calculate the theoretical yield and percentage yield of cyclohexene: cyclohexanol used- 20.0 ml cyclohexene obtained- 12.0 g
If 100.0 grams of copper (Cu) completely reacts with 25.0 grams of oxygen, how much copper(II) oxide (CuO) will form from 140.0 grams of copper and excess oxygen?
The resulting solution required 12.36 mL of 0.1211 M NaOH to back titrate the excess HCl. What was the percent CaCO3 in the unknown? Report your answer to two (2) decimal places
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