用戶:Xlrbxgs

喵喵喵？？？

${\ce {Co3O4}}$

<math>\Delta H=x\mbox{kJ}\centerdot \mbox{mol}^{-1}</math>

$\Delta H=x{\mbox{kJ}}\centerdot {\mbox{mol}}^{-1}$

<math>\rm reactant</math><ruby><math>\longrightarrow</math><rp>(</rp><rt>reaction conditions</rt><rp>)</rp></ruby><math>\rm resultant</math>

${\rm {reactant}}$$\longrightarrow$(reaction conditions)${\rm {resultant}}$

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