Kemija - 2020. ljeto, 35.

A. ${\mathrm{C}\mathrm{O}}_2\backslash mathrm\{CO\}\_\{2\}$

B. ${\mathrm{H}}_2\mathrm{O}\backslash mathrm\{H\}\_\{2\}\; \backslash mathrm\{O\}$

C. $\mathrm{N}\mathrm{a}\mathrm{C}\mathrm{l}\backslash mathrm\{NaCl\}$

D. ${\mathrm{C}\mathrm{u}\mathrm{S}\mathrm{O}}_4\cdot 5{\mathrm{H}}_2\mathrm{O}\backslash mathrm\{CuSO\}\_\{4\}\; \backslash cdot\; 5\; \backslash mathrm\{~H\}\_\{2\}\; \backslash mathrm\{O\}$