Mohon bantuannya kk​

Jawaban:

a. 58

b. 342

Penjelasan:

a. Mg(OH)2 = Ar Mg + ( 2 x Ar O ) + ( 2 x Ar H )

=> 24 + ( 2 x 16 ) + ( 2 x 1 )

=> 58

b. Al2(SO4)3 = ( 2 x Ar Al ) + ( 3 x Ar S ) + ( 12 x Ar O )

=> ( 2 x 27 ) + ( 3 x 32 ) + ( 12 x 16 )

=> 342