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A 0.48 g sample of graphite is put in a bomb calorimeter with an excess of oxygen. The water as well as calorimeter is at 25 Celsius. The graphite is ignited as well as burned and the water temperature rises to 28.05 Celsius. The heat capacity for the calorimeter is 5.15KJ/C. Compute DeltaH per MOLE of the reactant for this reaction.
The mass of an electron is 9.11× 10-31 kg. What is the uncertainty in the position of an electron moving at 1.00 × 106 m/s with an uncertainty of ?v = 0.01 × 106 m/s
A 4.10 g nugget of pure gold absorbed 274 J of heat. What was the final temperature of the gold if the initial temperature was 27.0°C? The specific heat of gold is 0.129 J/(g·°C).
A solution is prepared by dissolving 6.00g of unknown nonelectrolyte in enough water to make 1.00L of solution. the osmotic pressure of this solution is 0.750 atm at 25.0 C. what is the molecular weight of the unknown solute ( R= 0.0821 L.atm/K.mo..
A large number of polycyclic benzenoid aromatic hydrocarbons are known. One of these, benz/a/pyrene, is a powerful carcinogen found in tobacco smoke. Draw the structure of this hydrocarbon. Can you suggest other sources where this material might b..
explain how the relative strengths of solute-solute interactions solvent-solvent interactions and solvent-solute
Which of the following statements are true regarding the liquid-liquid extraction performed in the synthesis of phenacetin. Note that there may be more than one correct answer. Dichloromethane is the bottom layer because it is more dense than water..
A domestic water-carbonating kit uses steel cylinders of carbon dioxide of volume 250 cm3. They weigh 1.04 kg when full and 0.74 kg when empty. What is the pressure of gas in the cylinder at 20 degrees C
What did you observe in the reactions of zinc with 4 different acids: HCL, H2SO4, H3PO4, and CH3COOH
What is the change of energy when an electron of boron travels from the 4th energy level to the 2nd energy level
what is the electron domain geometry and molecular geometry for iodine
The following reaction equation depicts the reaction between hydrazine (N2H4) and dinitrogen textroxide (N2O4) to form diatomic nitrogen and water vapor.
A 36.4 l volume of methane gas is heated from 15 degrees C to 98 degrees C at constant pressure. what is the final volume of the gas?
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