`PTK_(Al)=27(dvC)`

`PTK_(H_2)=1.2=2(dvC)`

`PTK_(HCl)=1+35,5=36,5(dvC)`

`PTK_(H_2SO_4)=2.1+32+4.16=98(dvC)`

`PTK_(K_2O)=2.39+16=94(dvC)`

`PTK_(SO_2)=32+2.16=64(dvC)`

`PTK_(NaOH)=23+1+16=40(dvC)`

`PTK_(Fe(OH)_3)=56+(1+16).3=107(dvC)`

`PTK_(CaCO_3)=40+12+16.3=100(dvC)`

`PTK_(MgCl_2)=24+35,5.2=96(dvC)`

Giải thích các bước giải:

\(\begin{array}{l} PTK\ Al=27\ (đvC)\\ PTK\ H_2=1\times 2=2\ (đvC)\\ PTK\ HCl=1+35,5=36,5\ (đvC)\\ PTK\ H_2SO_4=1\times 2+32+4\times 16=98\ (đvC)\\ PTK\ K_2O=39\times 2+16=94\ (đvC)\\ PTK\ SO_2=32+16\times 2=64\ (đvC)\\ PTK\ NaOH=23+16+1=40\ (đvC)\\ PTK\ Fe(OH)_3=56+3\times (16+1)=107\ (đvC)\\ PTK\ CaCO_3=40+12+3\times 16=100\ (đvC)\\ PTK\ MgCl_2=24+35,5\times 2=95\ (đvC)\end{array}\)

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