Kemija - 2013./14. ljeto - 17.

A. $\mathrm{C}\mathrm{a}\mathrm{i}{\mathrm{C}\mathrm{O}}_2\backslash mathrm\{Ca\}~\backslash mathrm\{i\}\; ~\backslash mathrm\{CO\}\_\{2\}$

B. ${\mathrm{C}\mathrm{a}}^{2+}\mathrm{i}{\mathrm{C}\mathrm{O}}_3{}^{2-}\backslash mathrm\{Ca\}^\{2+\}\; \backslash mathrm\{~i\}\; ~\backslash mathrm\{CO\}\_\{3\}\{\; \}^\{2-\}$

C. $\mathrm{C}\mathrm{a}\mathrm{O}\mathrm{i}\mathrm{C}\mathrm{O}\backslash mathrm\{CaO\}\; ~\backslash mathrm\{i\}\; ~\backslash mathrm\{CO\}$

D. $\mathrm{C}\mathrm{a}\mathrm{O}\mathrm{i}{\mathrm{C}\mathrm{O}}_2\backslash mathrm\{CaO\}\; ~\backslash mathrm\{i\}~\; \backslash mathrm\{CO\}\_\{2\}$