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constants
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1. How many electrons in boron-11?
11 5 6 10 None of these

2. Which of these is a mixture?
Uranium Table Salt (NaCl) Iron Steel Water

3. 26.01/4.0
6.5 6.50 6.503 7 All of these

4. How many significant figures: 0.00580200
Answer:

5. Which of these has a negative charge?
Protons Neutrons Electrons Quarks None of these

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