5.85 g NaCl is dissolved in 1 L water. The total number of Na+ and Cl– ions in 1 mL of this solution will be;
6.02 × 1019
1.2 × 1022
1.2 × 1020
6.02 × 1020
Total ions = 2 × 0.1 × 6.022 × 1023
= 1.2044 × 1023 → per mL
= 1.2 × 1020
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