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Chemistry, 23.06.2019 01:00
Which statement characterizes synthetic polymers? a. they come from animals and plants. b. they are found in nature. c. they are made in a lab. d. they are components of starch.
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Chemistry, 23.06.2019 01:50
Ablock of aluminum is dropped into a graduated cylinder with an initial volume of water at 75ml and the volumes rises to 90ml. if the block has a mass of 40.5 g what is its density ?
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Chemistry, 24.06.2019 00:00
The concentration of a biomolecule inside a rod-shaped prokaryotic cell is 0.0027 m. calculate the number of molecules inside the cell, which is 4.4 μm long and 1.2 μm in diameter.
Answers: 1
Chemistry, 24.06.2019 07:20
Identify the more stable stereoisomer in the following pair, and choose the reason that explains your choice. cis− or trans−1−isopropyl−3−methylcyclohexane the more stable stereoisomer is: cis−1−isopropyl−3−methylcyclohexane trans−1−isopropyl−3−methylcyclohexane this is because: cis is more stable than trans in 1,3−disubstituted cyclohexanes. trans−1−isopropyl−3−methylcyclohexane has steric hindrance between the methyl and isopropyl groups. trans is more stable than cis in 1,3−disubstituted cyclohexanes. cis−1−isopropyl−3−methylcyclohexane has steric hindrance between the methyl and isopropyl groups.
Answers: 2
Which wind blows cool air inland during the day?...
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