My LaTeX style

\ProvidesPackage{style}

\usepackage{graphicx}

\usepackage{tikz}
% Inserts a scale bar into an image
% Optional argument: the colour of the bar and text
% Argument 1: an \includegraphics command
% Argument 2: the real world width of the image
% Argument 3: the length of the scale bar
% Argument 4: the units in which the scale bar is measured
\newcommand{\scalebar}[5][white]{
  \begin{tikzpicture}
    \draw (0,0) node[anchor=south west,inner sep=0] (image) { #2 };
    \begin{scope}[x={(image.south east)},y={(image.north west)}]
      \fill [#1] (0.05,0.2cm) rectangle (#4/#3+0.05,0.4cm);
      \draw [#1] (0.05,0.4cm) node[anchor=south west] { \SI{#4}{#5} };
    \end{scope}
  \end{tikzpicture}
}

% SI units
\usepackage{siunitx}
\DeclareSIUnit \molar {M}
\sisetup{separate-uncertainty=true}

\usepackage{booktabs}

\usepackage[version=3]{mhchem}

\usepackage{graphicx}

\usepackage{subcaption}

\usepackage{mathtools}

\usepackage[width=.75\textwidth]{caption}

\usepackage[superscript]{cite}

% Define acronyms
\usepackage{acronym}

\usepackage{chemfig}
\setdoublesep{0.35700 em}  % 'Bond Spacing'
 \setatomsep{1.78500 em}    % 'Fixed Length'
%\setatomsep{1.0 em}    % 'Fixed Length'
\setbondoffset{0.18265 em} % 'Margin Width'
\newcommand{\bondwidth}{0.06642 em} % 'Line Width'
\setbondstyle{line width = \bondwidth}

\usepackage{cleveref}