3. Chemistry Balancing equations๏
See: https://mirror.cse.unsw.edu.au/pub/CTAN/macros/latex/contrib/mhchem/mhchem.pdf
The mhchem package makes it easy to write balanced chemical equations.
1\documentclass[border=5mm]{standalone}
2\usepackage[version=4]{mhchem}
3\begin{document}
4\begin{minipage}{\textwidth}
5
6\section*{Balancing chemical equations using mhchem}
7
8\begin{enumerate}
9 \item \ce{CH4 + 2O2 -> CO2 + 2H2O}
10 \item \ce{2H2 + O2 -> 2H2O}
11 \item \ce{4Fe + 3O2 -> 2Fe2O3}
12 \item \ce{C2H5OH + 3O2 -> 2CO2 + 3H2O}
13 \item \ce{N2 + 3H2 -> 2NH3}
14 \item \ce{P4 + 5O2 -> P4O10}
15 \item \ce{C3H8 + 5O2 -> 3CO2 + 4H2O}
16 \item \ce{C6H12O6 + 6O2 -> 6CO2 + 6H2O}
17 \item \ce{CaCO3 -> CaO + CO2}
18 \item \ce{NaCl + AgNO3 -> NaNO3 + AgCl}
19\end {enumerate}
20\end {minipage}
21\end {document}