$\Huge{Na_2O_2·8H_2O}$
$\huge{Na_2O_2·8H_2O}$
$\LARGE{Na_2O_2·8H_2O}$
$\Large{Na_2O_2·8H_2O}$
$\large{Na_2O_2·8H_2O}$
$\Big{Na_2O_2·8H_2O}$
$\big{Na_2O_2·8H_2O}$
$\small{Na_2O_2·8H_2O}$
$\tiny{Na_2O_2·8H_2O}$
- 1
$\color{red}{red}$
$\color{lightred}{lightred}$
$\color{darkred}{darkred}$
$\color{brickred}{brickred}$
$\color{orangered}{orangered}$
$\color{wildstrawberry}{wildstrawberry}$
$\color{maroon}{maroon}$
$\color{violetred}{violetred}$
$\color{rubinered}{rubinered}$
$\color{blueviolet}{blueviolet}$
$\color{violetblue}{violetblue}$
$\color{redviolet}{redviolet}$
$\color{violetred}{violetred}$
$\color{royalpurple}{royalpurple}$
$~_n^nX_n^n$
$X^^n__n$
$~^1_2{\overset{3}{\underset{4}{X}}}~^5_6$
$~^1_2{\overset{3}{\underset{4}{X^5_6}}}$
${\overset{3}{\underset{4}{{}^1_2X^5_6}}}$
这一个怎么码的？蒟蒻求教！
，我是指下面的
{\overset{3}{\underset{4}{{}^1_2X^5_6}}}
${\overset{3}{\underset{4}{{}^1_2X^5_6}}}$
原理一会儿解释
$\ {e}^{i\pi}=-dfrac{\sqrt[3]{1}}{1^N}$
$e^{i\pi}=\frac{\sqrt[3]{1}}{1^N}$
e^{i\pi}=\frac{\sqrt[3]{1}}{1^N}
谢谢啦佬
$\Alpha\alpha\Beta\beta\digamma\Gamma\gamma\Epsilon\epsilon\varepsilon$
\Alpha\alpha\Beta\beta\digamma\Gamma\gamma\Epsilon\epsilon\varepsilon
6、氢氧化钠与碳酸氢钙反应
少量:$2NaOH+Ca\begin{pmatrix}HCO_3\end{pmatrix}_2\begin{pmatrix}少\end{pmatrix}===CaCO_3\downarrow+Na_2CO_3+2H_2O$
离子方程式:$2OH^-+2HCO_3^-+Ca^{2+}\begin{pmatrix}少\end{pmatrix}===CaCO_3\downarrow+CO_3^{2-}+2H_2O$
过量:$NaOH+Ca\begin{pmatrix}HCO_3\end{pmatrix}_2\begin{pmatrix}过\end{pmatrix}===CaCO_3\downarrow+NaHCO_3+H_2O$
离子方程式:$OH^-+HCO_3^-+Ca^{2+}\begin{pmatrix}过\end{pmatrix}===CaCO_3\downarrow+H_2O$
$\leftrightarrow\rightleftarrow$
$\frac{N_A}{56}$个