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constants
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1. How many significant figures: 26 * 300
Answer:

2. How many protons in sodium-23?
11 12 23 1 0

3. Which of these has 23 protons?
Scandium Titanium Vanadium Chromium None of these

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

5. When an element has a different number of neutrons, it is called a/an...
Anomaly Differentiated Mutated Isotope None of these

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