When a 50 mL sample of C2H5OH is mixed with a 50 mL sample of H2O, the resulting mixture has a volume of 95 mL, and the container is warm to the touch. Which of the following best describes these observations?
A chemical reaction occurs, as evidenced by the volume of the resultant mixture being less than the total volume of the initial components
A chemical change occurs, as evidenced by the formation of new covalent bonds releasing more energy than is absorbed by the breaking of the existing covalent bonds
A physical change occurs, and the solvation process is exothermic
A physical change occurs, and the solvation process is endothermic.
Answers: 1
Chemistry, 22.06.2019 10:30
What woukd most likely be the transmittance at a 0.70 m solution of solute a? a) 7.6%b) 1.1%c)4.0%d)4.6%
Answers: 1
Chemistry, 22.06.2019 18:00
Hydrogenation reactions, in which h2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. in the simplest case, ethene (c2h4) and h2 form ethane (c2h6). if 140 kj is given off per mole of c2h4 reacting, how much heat (in mj) is released when 12 kg of c2h6 forms?
Answers: 2
Chemistry, 22.06.2019 22:30
Why is it possible for different microorganisms to extract energy not only from carbohydrates and other biological molecules but from a large variety of substances?
Answers: 1
When a 50 mL sample of C2H5OH is mixed with a 50 mL sample of H2O, the resulting mixture has a volum...
Mathematics, 18.03.2020 11:26
Mathematics, 18.03.2020 11:27
Chemistry, 18.03.2020 11:28
Chemistry, 18.03.2020 11:31
Mathematics, 18.03.2020 11:34
Biology, 18.03.2020 11:37
Mathematics, 18.03.2020 11:38
Biology, 18.03.2020 11:39
Mathematics, 18.03.2020 11:46
English, 18.03.2020 11:53
Social Studies, 18.03.2020 11:54