Chemistry, 21.07.2019 07:00 asmita9876
Apolar covalent bond will form between which two atoms? a. beryllium and fluorine (group 1 and group 7) b. hydrogen and chlorine (group 7) c. sodium and oxygen (group 1 and group 6) d. fluorine and fluorine (group 7)
Answers: 1
Chemistry, 21.06.2019 16:30
Jewelweed, a flowering plant, has seed pods that burst open when touched and forcefully eject their seeds. these structures are favorable because they a. can cause genetic changes to occur. b. prevent germination within the seed pod. c. aid in the dispersal of the species. d. attract insects that aid in pollination.
Answers: 3
Chemistry, 21.06.2019 18:00
What is the theoretical yield of carbon dioxide? a)0.993 gb)2.98 gc)3.65 gd)8.93 g
Answers: 1
Chemistry, 21.06.2019 21:00
The earth's moon is unusually large. two popular theories of the moon's origin include the "sister world" hypothesis, which states that the moon formed from the same materials as the earth, near enough to the earth that they fell into orbit around each other. a second theory is the "capture" hypothesis, in which the moon formed elsewhere in the solar system, and the earth's gravity pulled it into its orbit. studies of what the moon is made of indicate that some of its materials had to come from the earth or from the same area of the solar system where the earth had formed. at the same time, the moon does not contain much of the material that makes up the earth's core, so the moon could not have formed from the same materials as the earth. how do the two facts above affect the described theories of the moon's origin? a. they show that scientists will never agree on where the moon came from. b. they show that more experiments on moon formation need to be done. c. they show that no theory accounts for the existence of the moon. d. they show that neither theory is complete and entirely correct.
Answers: 1
Chemistry, 22.06.2019 03:20
Which type of substance ionizes partially and gives off hydrogen ions when dissolved in water? a. strong acid b. strong base c. weak acid d. weak base
Answers: 1
Apolar covalent bond will form between which two atoms? a. beryllium and fluorine (group 1 and grou...
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