Kemija - 2015./16. jesen - 41.

$\mathrm{C}\mathrm{a}\mathrm{O}\backslash mathrm\{CaO\}$

$\mathrm{C}\mathrm{a}(\mathrm{O}\mathrm{H}{)}_2\backslash mathrm\{Ca\}(\backslash mathrm\{OH\})\_\{2\}$

${\mathrm{C}\mathrm{H}}_3\mathrm{C}\mathrm{O}\mathrm{O}\mathrm{H}\backslash mathrm\{CH\}\_\{3\}\; \backslash mathrm\{COOH\}$

${\mathrm{N}\mathrm{H}}_3\backslash mathrm\{NH\}\_\{3\}$