Chemistry, 02.10.2020 17:01 jrfranckowiak
A student measures a cube composed of an unknown substance. The mass was determined to be 112.8 g, and the volume 63 cm3. What is the density of the cube? a) 0.6 cm3/g b) 1.8 g/cm3 c) 0.6 g/cm3 d) 1.8 cm3/g
Answers: 3
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Imagine that twenty i.u.’s of enzyme z were catalyzing the above reaction for one minute, under vmaxconditions, in a 3.00 ml assay volume. the assay is buffered with 20 mm phosphate buffer, ph 7.60. what will the ph be at the end of that one minute?
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You just calculated that the heat of fusion for chloromethane is 6400 j/mol. the heat of fusion for hydrogen is 120 j/mol.? which of the following account for this difference? more than one correcta. chloromethane can absorb more energy at the same temperature. b. hydrogen has stronger intermolecular forces than chloromethane. c. hydrogen molecules can pack more closely than chloromethane molecules. d. chloromethane experiences dipole-dipole interactions. e. chloromethane has a higher molar mass than hydrogen.
Answers: 3
A student measures a cube composed of an unknown substance. The mass was determined to be 112.8 g, a...
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