1.

H_(2)C_(2)O_(4)*2H_(2)O its molecular mass ...........

Answer»

90 u
126 u
124 u
136 u

Solution :MOLECULAR mass ` = 6("ATOMIC mass of H") + 2("atomic mass of C") + 6("atomic mass of CO")`
`=6(1)+2(12)+6(16)=126u`


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