Mr(H2SO4)=2*Ar(H)+Ar(S)+4*Ar(O)=2*1+32+4*16=98
Mr(Al(OH)3)=Ar(Al)+3*Ar(O)+3*Ar(H)=27+3*16+3*1=78
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Mr(H2SO4)=2*Ar(H)+Ar(S)+4*Ar(O)=2*1+32+4*16=98
Mr(Al(OH)3)=Ar(Al)+3*Ar(O)+3*Ar(H)=27+3*16+3*1=78