Answer:
Salt (NaCl) is an ionic bond that consists of Sodium (Na) which is a metal with positive charge combines with Chlorine (Cl), a nonmetal with a negative charge.
Explanation:
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1. C
2. A
3. A & B
4. C
5. C
6. A
7. A
8. A & C
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Number of proton K=19
so, 42 - 19 =23
then the answer in 19 protons and 23 neutrons
Answer: a. 0.26mol
b. 0.000479mol
c. 1.12mol
Explanation: Please see attachment for explanation