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Compute the entropy of a mole of helium at room temperature and atmospheric pressure, pretending that all the atoms are distinguishable. Compare to the actual entropy, for indistinguishable atoms, computed in the text.
How much heat in kilocalories is required to melt 1.0mole of isopropyl alcohol (rubbing alcohol; molar mass = 60.0g/mol )? The heat of fusion and heat of vaporization of isopropyl alcohol are 21.4cal/g and 159cal/g , respectively
Compute the volume to which the airbag inflates due to the decomposition of 13g of sodium acid at 50oC and a pressure of 1.08atm, given R = 0.0821 L.atm/ K.mol.
Mixing 20.0mL of a 3.00 M sugar solution with 30.0mL of a 5.00 M sugar solution results in a solution with what molar concentration?
How many moles of oxygen can be obtained by the decomposition of 10.0 mol of reactant in the reaction 2KClO3 --> 2KCl + 3O2
consider the hypothetical elements x y and z with the following lewis formulas. x with seven electron dots around it y
Compute the weight in grams of a double-helical DNA molecule stretching from the earth to the moon (˜320,000 km). The DNA double helix weighs about 1 x 10-18g per 1,000 nucleotide pairs each base pair extends 3.4 angstrom.
How many minutes would a solution of Cd2+ have to be electrolyzed with a 2.420 A current to plate out 1.77 g of Cd? min
If 3.0 L of oxygen gas at 177°C is cooled at constant pressure until the volume becomes 1.50 L, then what is the final temperature
A mixture of two miscible liquids with a widely different boiling point is distilled. The temperature of distilled liquid is observed to plateau and then drop before rising again. Explain the temperature drop.
Formulate a rule/guideline for determining the number of valence electrons from an electron configuration in elements with d electrons present
A mixture of N2, O2, and CO2 has a total pressure of 791. torr. In this mixture the partial pressure of N2 is 115. torr and the partial pressure of O2 is 193. torr.
Problem- Use charge balance to determine x in the formula for the sorosilicate bertrandite, Be 4 Si 2 O 7 (OH) x
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