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At 25C, burning 0.200 mol of H2(g) with 0.100 mol of O2(g) to produce H2O(l) in a bomb calorimeter raises the temperature of the calorimeter by 0.880C, When 0.100 mol of toluene(C7H8(l)) is burned in this calorimeter, the temperature is raised by 0.615C. The equation for the combustion reaction is
C7H8(l) + 9O2(g) --> 7CO2(g) + 4H2O(l)
Calculate delta E for the above reaction in kj per mol of toluene. Hint: use delta H formation (H2O(l))=-286 kj/mol to calculate delta E formation (H2O(l)) in kj/mol, then use the hydrogen combustion reaction to calculate the heat capacity of the calorimeter. This heat capacity can then be used to solve for the heat liberated in the above reaction.
if the thermometer is position too high in the distillation adapter how would this affect your boiling point
what mass of precipitate will form if 1.50 L of concentrated Pb(CLO3) is mixed with 0.550 L of 0.230 M NaI ? assume the reaction goes to completion.
Calculate the number of sodium ions in (6.107x10^1) g sodium phosphate. 2. An aqueous solution of 10.0 grams of ammonium sulfide is mixed with an aqueous soluion of 10.0 grams of copper (II) chloride. What is the formula of the compound that precipit..
If the end of the crutch is a circle of radius 1.2 cm without the tip, and the tip is a circle of radius 2.3 cm, by what factor does the tip reduce the pressure exerted by the crutch?
Calculate the percent by weight, mole fraction and mole percent of each component in a mixture consisting 9g of water (H2O), 120g acetic acid(CH3COOH) and 115g of ethyl alcohol (C2H5OH).
What is the pH of a 0.175-M potassium formate solution, KHCOO? The ionization of formic acid is 2.1 x 10^-4
a 20 year old male was brought to paramedics after ingesting 100mL of pure ethylene glycol which is a lethal dose. The hospital pharmacy is out of ehtanol so they use a bottle of 100-proof whiskey in your medical bag.
a particular gas exerts a pressure of 785 mmHg. what is this pressure in units of Atmospheres
Which solution will have the lowest boiling point?
sulfuric acid acts as a catalyst for making esters. Write an equation showing the production of Isoamyl alcohol
A Be3+ ion emitts a photon with a frequency of 4.68 × 1016 Hz. If the energy of the initial state of the Be3+ ion was -3.88 × 10(-18) J, calculate the energy of the final state. Express answer in scientific notation.
Compound E was heated with bromine and aqueous sodium hydroxide to give compound F (C7H9N). Compound F was treated with cold sodium nitrite and an excess of hydrochloric acid a colorless gas was evolved, and when the resulting liquid reaction mixt..
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