No. [[Oxygen]] [[atom]]s = 2
[[Relative Formula Mass]] '''M<sub>r</sub>''' of O<sub>2</sub> = 16x2
[[Relative Formula Mass]] '''M<sub>r</sub>''' of O<sub>2</sub> = 32g
| style="height:20px; width:275px; text-align:left;" |
No. [[Oxygen]] [[atom]]s = 2
[[Relative Formula Mass]] '''M<sub>r</sub>''' of CO<sub>2</sub> = 12x1 + 16x2
[[Relative Formula Mass]] '''M<sub>r</sub>''' of CO<sub>2</sub> = 44g
| style="height:20px; width:275px; text-align:left;" |
No. [[Oxygen]] [[atom]]s = 6
[[Relative Formula Mass]] '''M<sub>r</sub>''' of C<sub>6</sub>H<sub>12</sub>O<sub>6</sub> = 12x6 + 1x12 + 16x6
[[Relative Formula Mass]] '''M<sub>r</sub>''' of C<sub>6</sub>H<sub>12</sub>O<sub>6</sub> = 180g
|}