Chemistry, 26.06.2019 14:00 Albertrami9019
Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points) it has been proven by several scientists independently, resulting in its being accepted as truth. it is based on the beliefs and opinions of the majority of the scientific community. it is an observation of the natural world that has been proven as fact. it is the best explanation that scientists can offer, based on many scientific investigations.
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Chemistry, 21.06.2019 14:00
Your answer should have the same number or significant figures as a he starting measurement. 3201 ml =
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Chemistry, 21.06.2019 15:00
Which element in the third period would you expect to have the larger atomic radius, sodium (na) or sulfur (s)? a. sodium, because it has a higher effective nuclear charge attracting electrons in fewer energy levels. b. sodium, because it has fewer protons attracting electrons in the same energy levels. c. sulfur, because it has more protons attracting electrons in more energy levels. d. sulfur, because it has a higher effective nuclear charge attracting electrons in the same energy levels.
Answers: 2
Chemistry, 22.06.2019 10:00
In a water molecule, hydrogen and oxygen are held together by a(an) bond. a) double covalent b) ionic c) nonpolar covalent d) hydrogen e) polar covalent
Answers: 1
Observation and experimentation have led many scientists to accept a theory about the origin of the...
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