Chemistry, 15.12.2020 23:30 imgraciebaker
Kenya pours 100 milliliters of water into a graduated cylinder. She then pours 100 milliliters of water into a beaker. She places them both on a tabletop in her kitchen, as shown in the image. What do you think will happen to the water over an eight-hour period? Will there be a difference in how evaporation occurs in the graduated cylinder and the beaker? Write down your hypothesis.
Answers: 2
Chemistry, 21.06.2019 14:20
Which of the following statements is not true? • a. covalent compounds have low melting and boiling points. • ob. covalent bonds between atoms of a compound are relatively weak compared to bonds between molecules. • c. covalent bonds occur between nonmetals. • d. covalent compounds are often gases or liquids.
Answers: 2
Chemistry, 22.06.2019 16:00
Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.
Answers: 3
Chemistry, 23.06.2019 08:40
The activation energy for this reaction is 75 kj·mol–1. the enzyme catalase (found in blood) lowers the activation energy to 8.0 kj·mol–1. at what temperature would the non-catalyzed reaction need to be run to have a rate equal to that of the enzyme-catalyzed reaction at 25°c?
Answers: 2
Kenya pours 100 milliliters of water into a graduated cylinder. She then pours 100 milliliters of wa...
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