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A 4.305-gram sample of a nonelectrolyte is dissolved in 105 grams of water. The solution freezes at -1.23°C. Calculate the molecular weight of the solute. Kf for water = 1.86°C/m.
39.7 g/mol
58.4 g/mol
46.2 g/mol
62.0 g/mol
74.2 g/mol
A certain substance has a heat of vaporization of 29.00 kj/mol. At what Kelvin temperature will the vapor pressure be 3 times highe
if the density of mercury is 13.6g/cm3, what will be the volume of 300g of mercury ?
The highest possible oxidation state for halogens is +7 and the lowest possible is -1. Which of the following could not disproportionate?
A 10.20-mL sample of sulfuric acid from an automobile battery requires 35.99-mL of 2.33 M sodium hydroxide solution for complete neutralization. What is the molarity of the sulfuric acid? Sulfuric acid contains two acidic hydrogens.
Nitrogen dioxide dimerizes to produce dinitrogen tetroxide. Give a possible explanation for why this reaction occurs
what the oxidation state P in PO4^-2? what the oxidation state O in PO4^-2?
Why does an atomic emission measurement of concentration have more error associated with it than an atomic absorption
at constant volume, the initial pressure of a substance is 0.63 atm and the initial temperature is 283 k.calculate the pressure of the substance at 295 k.
Consider All the by products that will be formed by E1/E2 processes for the reaction of 2-methyl, Provide structures for all possible by products b) which alkene would be favored and why?
How many unpaired electrons in the F22+ ion are based on molecular orbital theory? The order of the molecular orbitals are (σ2s)(σ*2s)(σ2p)(π2p)(π*2p)(σ*2p).
What difference would you predict would occur in the graphing of the data if carbon dioxide was used instead of the components of air?
A 3.84-mole sample of a gas is held at a temperature of 297 K and a pressure of 286 atm. Determine the volume of the gas sample.
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