\documentclass[11pt,a4paper,norsk]{book}
\usepackage[norsk]{babel}
%\documentclass[twocolumn,a4paper]{report}
-\usepackage[norsk]{babel}
\usepackage{multicol}
\usepackage{color}
\usepackage{fancyhdr}
%%----------------------------------------------------------%%
\begin{document}
-\newcommand{\sv}{svovelsyre, H$_{2}$SO$_{4}$\xspace}
-\newcommand{\trijodid}{nitrogentrijodid, NI$_{3}$\xspace}
-\newcommand{\pik}{C$_{6}$H$_{2}$O$_{7}$N$_{3}$, Pikrinsyre\xspace}
-\newcommand{\vann}{H$_{2}$O\xspace}
-\newcommand{\amm}{ammoniakk, NH$_{3}$\xspace}
-\newcommand{\sal}{salpetersyre, HNO$_{3}$\xspace}
-\newcommand{\ma}{malonsyre CH$_{2}$(COOH)$_{2}$}
-\newcommand{\hyd}{hydrogenperoksyd, H$_{2}$O$_{2}$\xspace}
-\newcommand{\am}{NH$_{3}$\xspace}
-\newcommand{\celcius}{$^{\circ}$C\xspace}
+\include{ourmacros}
\setcounter{tocdepth}{2}
\makeatletter