Question

Biết:Mg=24;C=12;O=16;Zn=65;Fe=56;N=14;K=39;S=32 a)MgO b)Fe3O4 c)Zn(OH)2 d)NO2 e)CO f)ZnO j)N2O h)KOH i)MgSO2

Answer 1

Nhưng yêu cầu đề là làm gì em?

Answer 2

\(a)MgO=24+16=40\left(đvC\right)\\ b)Fe_2O_3=56.2+16.3=160\left(đvC\right)\\ c)Zn\left(OH\right)_2=65+\left(16+1\right).2=99\left(đvC\right)\\ d)NO_2=14+16.2=46\left(đvC\right)\\ e)CO=12+16=28\left(đvC\right)\\ f)ZnO=65+16=81\left(đvC\right)\\ j)N_2O=14.2+16=44\left(đvC\right)\\ h)KOH=39+16+1=56\left(đvC\right)\\ i)MgSO_2=24+32+16.2=88\left(đvC\right)\)