Scientists are always learning new things. Which of the following shows how
scientists use observations to gain new understanding about the world?
A. Scientists have discovered new planets orbiting a star by
detecting a wobble in the star's motion.
B. Scientists hope to learn more about how many stars are in space.
C. Scientists wonder if other planets can support life, and some
scientists wonder if there are aliens.
D. Scientists are familiar with some galaxies, but they do not know
how many galaxies exist.
Answers: 2
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The compound methyl butanoate smells like apples. its percent composition is 58.8% c, 9.9% h, and 31.4% o. what’s the empirical formula ?
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What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5
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Some liquids can be distilled, but only at temperatures that are so high that it is impractical, or so high the compound decomposes. explain why distillation such compounds at significantly less than atmospheric pressure (some degree of vacuum) would solve this problem.
Answers: 2
Chemistry, 22.06.2019 21:00
Acandle’s wick is the fabric string that holds the flame, and it burns down at a constant slow pace when the candle is lit. the wick is usually surrounded by wax. which is the most important property of covalent compounds that makes them useful for making candle wax? a low boiling point a low melting point a high boiling point a high melting point
Answers: 1
Scientists are always learning new things. Which of the following shows how
scientists use observat...
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