13. D
14. A
15. C
16. B
17. F
18. E
Answer: B
Refer:
Because water molecules are polar, they interact with the sodium and chloride ions. In general, polar solvents dissolve polar solutes, and nonpolar solvents dissolve nonpolar solutes. This concept is often expressed as “Like dissolves like.
Gold has 79 protons on the periodic table
Answer:.............................c
Explanation:
3Fe(s) + 4H2O(l) — 1Fe3O4(s) + 4H2(g)
