Answer: The best reason the scientific community will accept a theory is if it is proven.
Answer:
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Explanation:
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Yes. Percent yield shows how efficient one's method is. If his isolated caffeine proved to be at only 1.5%, compared to least 50% as in many of the previous experiments, the student should be very concerned as it shows that something caused the yield to sharply drop.
Answer:
A. They would have observed a radioactive signal in both the pellet and the liquid.
I agree with the person on top have a beautiful day:)
