Respostas

  • Usuário do Brainly
2013-09-16T14:44:13-03:00
A) H2SO2= 1*2+32+16*2= 66
b) C6H12O6= 12*6+12+16*6= 180
c) Fe2(SO4)3=  56*2+32*3+16*12=400
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