When chemists convert ethene (c2h2) to ethanol (ch3ch2oh), they have a mixture of the two gaseous substances. why do chemists then lower the temperature of the mixture? to collect liquid ethene and leave ethanol as a gas because ethene has stronger dipole-dipole forces to collect liquid ethene and leave ethanol as a gas because ethanol has stronger london dispersion forces to collect liquid ethanol and leave ethene as a gas because ethanol has hydrogen bonds to collect liquid ethanol and leave ethene as a gas because ethene has stronger london dispersion forces

Which is a chemical property of iron? a. it forms iron oxide (rust) when exposed to moisture and air. b. it is a gray–black metal that is hard to the touch. c. it has a melting point of 2795°f (1536°c). d. it is a good conductor of heat

You mix the pks of succinic acid are 4.21 and 5.64. how many gramsa graduate student at sdsu wants to measure the activity of a particular enzyme at ph 4.0. to buffer her reaction, she will use a buffer system based on one of the acids listed below, which acid is most appropriate for the experiment? of monosodium succinate (fw = 140 g/mol) and disodium succinate (fw = 162 g/mol) must be added to 1 l of water to produce a solution with a ph 5.28 and a total solute concentration of 100 mm? (assume the total volume remains 1 liter, answer in grams monosodium succinate, grams disodium succinate, respectively.) volumes of 0.05 m nah2po4 and 0.05 m na2hpo4 (pk's for phosphoric acid are 2.15, 6.82 and 12.38). which of the following best describes the resulting solution?

Which substance is a steroid? cholesterol fatty acid monosaccharide trans fat