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Verizon [17]
3 years ago
6

If a student measured an object's density to be 2.70 g/mL, 2.32 g/mL, 2.12 g/mL and 3.88, then his results would considered ____

__The object's actual density is 3.50 g/mL A. Accurate and precise B.Precise but not accurate C. Neither accurate nor precise D.Accurate but precise
Chemistry
1 answer:
ValentinkaMS [17]3 years ago
5 0

Answer:

C. Neither accurate nor precise

Explanation:

  • The student's results would be considered precise if they were close to one another. However they vary significantly from one another.
  • Regarding accuracy, they would be considered accurate if they were close to the actual value. The given results are too far away from the actual value.

Thus the results are neither accurate nor precise.

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Answer:

1.873\times 10^{13} electrons should be added to one of these spheres to make it electrically neutral.

Explanation:

Total charge on each sphere =  +3.0 μC =3\times 10^{-6} C

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In order to neutralize the positive charge equal magnitude of negative charge is to be added.

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