What is the molar mass of a nonelectrolyte
What is the molar mass of a nonelectrolyte if 6.02 grams dissolved in 30.0 grams of benzene freezes at -1.55 .C? The freezing point of pure benzene is 5.50 .C and the freezing point depression constant, Kfp, is -5.12 .C/m.
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What is the boiling point of a mixture composed of 85 g HOCH2CH2OH (ethylene glycol) and 125 g H2O? The boiling point elevation constant for H2O is 0.512 .C/m.
How much energy (in calories) is needed to heat 10cm^3 of fat from room temperature (25 C) to its melting point (35 C)?
What quantity of ethylene glycol, HOCH2CH2OH, must be added to 50 grams of water to raise the boiling point by 1.0 C? Express this answer in grams.
Even though the carbonyl and amine are connected by a single bond, there is essentially no rotation around this bond, why is that? Can the amine group of the peptide bond function as a nucleophile?
Concentrated NaOH is 12 M and has a density of 1.53 g/mL. What is the percent NaOH by mass of concentrated NaOH?
What were the defining characteristics of the polis, and why did it evolve as it did? Also, think about the three poleis of Athens, Sparta, and Corinth.
2 NO(g) + O2(g) 2 NO2(g) In one experiment 0.633 mole of NO is mixed with 0.354 mole of O2. Calculate also the number of moles of NO2 produced.
Weigh the relative importance of the Industrial and Market revolutions in changing the American economy. In what ways was the economy different in 1860 from what it had been in 1800? How would you explain those differences?
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