• question_answer 9) Give molecular mass of the following compounds: (i) ${{H}_{2}}O$ (ii) $C{{O}_{2}}$ (iii) $C{{H}_{4}}$

${{H}_{2}}O:2+16=18\,amu$ $C{{O}_{2}}:12+32=44\,amu$ $C{{H}_{4}}:12+4=16\,amu$

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