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In an adiabatic bomb calorimeter, oxidation of 0.4362g of naphthalene(C10H8) caused a temperature rise of 1.707 degree celsius. The final temperature was 298.15K. The heat capacity of the calorimeter and water was 10,290 J/K, and the heat capacities of the products can be neglected. If corrections for the oxidation of the wire and residual nitrogen are neglected, what is the molar internal energy of combustion of napthalene? What is the molar enthalpy of formation?
from your understanding of colligative propertieshow would design an experiment to measure the freezing point of a
what would you expect to see if you performed a benedits and fehlings tests on manosse and galactose?
What is the de Broglie wavelength in cm, of a 12.7 g hummingbird flying at 1.15 multiplied by 102 mph? (1 mile = 1.61 km.)
The enthalpy of vaporization of ethanol is 38.7 kJ/mol at its boiling point (78°C). Calculate the value of DeltaSsurr when 1.00 mole of ethanol is vaporized at 78.0°C and 1.00 atm
The distance between layers in a crystal is 265 pm. X rays are diffracted from these layers at an angle of 20.1°. Assuming that n = 4, calculate the wavelength of the X rays in nm.
How many photons are contained in a burst of yellow light (589 nm) from a sodium lamp that contains 609 kJ of energy
Radium-226 (atomic mass = 226.025402 ) decays to radon-224 (a radioactive gas) with a half-life of 1600 years. what colume of radon gas is produced by 25.0 g of radium in 5.0 days?
Sodium peroxide used to remove carbon dioxide from the air supply in space crafts. it works by reacting with the co2 in the air to produce sodium carbonate and O2.
How many grams of carbon monoxide (CO) are produced from a mixture of 70.0g SiO2 and 50.0 g of carbon. The balance ewaution is given below.
A 750 mL vessel contains 2.50 g of an unknown gas at a temperature of 0 C and pressure 300 mm Hg. A small sample of this gas is removed from the vessel and transferred into a new vessel at 500C and pressure 760 mm Hg. What is the density of gas af..
Using Curved arrows, draw the formation of the carbocation and halide. Also include a qualitative reaction coordinate diagram for each mechanism.
If a 1-mole sample of a real gas from a compressed gas cylinder goes from 230 atm to 1 atm and from a volume of 1cm3 to 195cm3, what is the entropy change for the expansion if it is assumed to be isothermal.
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