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poizon [28]
3 years ago
10

Scientists have measured and recorded the average rainfall of an area over several years to see if there is a pattern. Which kin

d of investigation does this best describe? A. controlled experiment B. systematic observation C. field study D. simulation
Chemistry
1 answer:
tia_tia [17]3 years ago
8 0
The correct answer is d
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Answer:

A

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A sample of a compound contains 60.0 g C and 5.05 g H.

divide by molar mass of C(12) and H(1) to get molar ratio

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See explanations

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