Which of the following are balanced equations? Check all that apply. A. Zn(s) + HCl(g) → ZnCl (s) +H (8)

B. 2Na(s) + MgF2 → 2NaF(s) + Mg(s) +

c. Na(s) + MgF2 → 2NaF(s) + Mg(s) 2

D. 4Na(s) + O2(8) ► 2NaO

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons

Explain what happens at the saturation point when adding salt to water at room temperature.

Which of the following is most likely true about water in chemical systems? a) water dissolves nonpolar ionic compounds. b) water dissociates ionic compounds. c) water dissociates covalent molecules. d) water dissolves nonpolar covalent substances.