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Chapter 11: Q11.2-10E (page 646)
Explain why solutions of HBr in benzene (a nonpolar solvent) are nonconductive, while solutions in water (a polar solvent) are conductive.
Conductive means to produce electricity
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Explain the cleansing action of soap.
The sugar fructose contains 40.0% C, 6.7% H, and 53.3% O by mass. A solution of 11.7 g of fructose in 325 g of ethanol has a boiling point of 78.59 掳C. The boiling point of ethanol is 78.35 掳C, and\({\bf{Kb}}\)for ethanol is 1.20 掳C/m. What is the molecular formula of fructose?
Predict whether each of the following substances would be more soluble in water (polar solvent) or in a hydrocarbon such as heptane(\({{\bf{C}}_{\bf{7}}}{{\bf{H}}_{{\bf{16}}}}\), nonpolar solvent):
The concentration of glucose, \({{\bf{C}}_{\bf{6}}}{{\bf{H}}_{{\bf{12}}}}{{\bf{O}}_{\bf{6}}}\) in normal spinal fluid is\(\frac{{{\bf{75mg}}}}{{{\bf{100g}}}}\). What is the molality of the solution?
What is the expected electrical conductivity of the following solutions?
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