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A cylindrical metal can, blackened on the outside, 0.10m high and 0.05m in diameter, contains liquid 4He at its normal boiling point of 4.22K, at which its heat of vaporization is 20.4 kJ jkg.
Completely surrounding the helium can are walls maintained at the temperature of liquid nitrogen (77.35 K), and the intervening space is continuously evacuated to a very low pressure. How much helium is lost per hour?
what percent of the fuel consists of the lighter isotope? Assume that the masses of the two isotopes are exactly 235 and 238 amu.
Calculate the heat of solution (i.e., delta H of solution)of ammonium nitrate in kJ/mol. Assume that the energy exchange involved only the solution and that the specific heat of the solution is 4.18 J/g. deg.
An intermediate in a chemical reaction is a species that the reactant molecules interact with during an early step in a reaction that is regenerated
What is the IUPAC substitutive name of the organic product formed in the reaction between cyclohexanol and phosphorus tribromide
a sample of gas is collected over water at a temperature of 35 c when the barometric pressure reading is 742 torr. what
Explain what is the concentration of a solution made by diluting 55mL of 6.0 M HCl to a final volume of 750 mL
Draw the configurational isomers of 1-bromo-4-methylcyclohexane. (b) Draw the conformational isomers of the structures drawn in (a).
what is the pressure at the under water site. Pressure increases at 1.0 atm for every 10 m depth; at what depth was the diver working. Assume the temp remains constant.
how many radial nodes are present in the radial eigenfunction associated with the 3p atomic orbital associated with the 3p atomic orbital for hydrogen like atom?
Attractive intermolecular forces exist between the molecules in the gas. The effect of these attractive intermolecular forces in a real gas is to
when we perform the silver nitrate test.which five anions will combine with silver ion to form insoluble precipitates?
Consider the following potential sources of error in an experiment designed to calculate the value of x in MgSO4 . x H2O. Predict whether the value of x of the hydrate will be high, low, or unchanged as a result of each error and please explain. W..
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