\documentclass[fleqn]{article} \usepackage{fullpage} \usepackage[margin=1in]{geometry} \usepackage{amsmath} \usepackage{amsthm} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amstext} \usepackage{wasysym} \usepackage{type1cm} \usepackage{xfrac} \usepackage{xspace} \usepackage[T1]{fontenc} \usepackage[utf8]{inputenc} \usepackage{textcomp} \usepackage{pifont} \usepackage{ulem} \usepackage{fouridx} \usepackage[shortlabels,inline]{enumitem} \usepackage[makeroom]{cancel} \usepackage{siunitx} \usepackage{mathtools} \usepackage[version=3]{mhchem} \usepackage{chemmacros} \usepackage{fix-cm} \setlength{\parindent}{0in} \setlength{\parskip}{0in} \setlength{\mathindent}{0pt} \allowdisplaybreaks \pagestyle{empty} \newcommand{\since}{\raisebox{0.56pt}{\rotatebox[origin=c]{180}{$\Large\wasytherefore$}}} \newcommand{\thus}{\Large\wasytherefore} \sisetup{inter-unit-product=\cdot,number-unit-product=\text{ },tight-spacing=true} \begin{document} \hfill \begin{minipage}[t]{2in}\begin{center}4.2 - Calculating Mass\end{center}\end{minipage}\hfill\llap{} \par\medskip \begin{enumerate}[start=3,nosep,leftmargin=0in] \item $\begin{array}[t]{@{}ll@{}} \begin{minipage}[t]{3in}\begin{enumerate}[a),nosep]\item eaglrbha;elr eaglrbha;elrgh'eejkggwerg \\ qeithqerihjgw'lerhjg'wrjehwerh \\ qeithqerihjgw'lerhjg'wrjehwerh \\ aaaaaaaaaaaaaaaaaaaaa \item eaglrbha;elrgh'eejkgwerg \\ qeithqqeithqqeithqerihjg \\ w'lerhjg'wrjehwerh \item eaglrbha;elrgh'eejkgwerg \\ qeithqerihjgw'lerhjg'wrjehw \\ erhqeithqerihjgw'lerhjg'wrjehwerh \\ qeithqerihjgw'lerhjg'wrjehwerh\end{enumerate}\end{minipage} & \begin{minipage}[t]{3in}\begin{enumerate}[1),nosep,start=5]\item eaglrbha;elrgh'eejkgwerg \\ qeithqerihjgw'lerhjg'wrjehwerh \item eaglrbha;elrgh'eejkgwerg \\ qeithqerihjgw'lerhjg'wrjehwerh \item eaglrbha;elrgh'eejkgwerg \\ qeithqerihjgw'lerhjg'wrjehwerh\end{enumerate}\end{minipage} \end{array}$ \end{enumerate} \end{document}
Below is my real document
\documentclass[fleqn]{article} \usepackage{fullpage} \usepackage[margin=1in]{geometry} \usepackage{amsmath} \usepackage{amsthm} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amstext} \usepackage{wasysym} \usepackage{type1cm} \usepackage{xfrac} \usepackage{xspace} \usepackage[T1]{fontenc} \usepackage[utf8]{inputenc} \usepackage{textcomp} \usepackage{pifont} \usepackage{ulem} \usepackage{fouridx} \usepackage[shortlabels,inline]{enumitem} \usepackage[makeroom]{cancel} \usepackage{siunitx} \usepackage{mathtools} \usepackage[version=3]{mhchem} \usepackage{chemmacros} \usepackage{fix-cm} \setlength{\parindent}{0in} \setlength{\parskip}{0in} \setlength{\mathindent}{0pt} \allowdisplaybreaks \pagestyle{empty} \newcommand{\since}{\raisebox{0.56pt}{\rotatebox[origin=c]{180}{$\Large\wasytherefore$}}} \newcommand{\thus}{\Large\wasytherefore} \sisetup{inter-unit-product=\cdot,number-unit-product=\text{ },tight-spacing=true} \begin{document} \hfill \begin{minipage}[t]{2in}\begin{center}4.2 - Calculating Mass\end{center}\end{minipage}\hfill\llap{} \par\medskip \begin{enumerate}[start=3,nosep,leftmargin=0in] \item $\begin{array}[t]{@{}ll@{}} \begin{minipage}[t]{3in}\begin{enumerate}[a),nosep]\item $\begin{aligned}[t]\ce{m_{\ce{He2}}}&=\text{4.2 mol}\times\text{4 g/mol} \\ &=\text{16.8 g}\end{aligned}$ \item $\begin{aligned}[t]\ce{m_{\ce{Pb}}}&=\text{\num{8.11e-2} mol}\times\text{207.2 g/mol} \\ &=\text{16.8 g}\end{aligned}$ \item $\begin{aligned}[t]\ce{n_{\ce{He2}}}&=\dfrac{\text{\num{3.01e22} atoms}}{\text{\num{6.02e23} atoms}} \\ &=\text{0.05 mol}\end{aligned}$ \par\smallskip $\begin{aligned}[t]\ce{m_{\ce{He2}}}&=\text{0.05 mol}\times\text{4 g/mol} \\ &=\text{0.2 g}\end{aligned}$\end{enumerate}\end{minipage} & \begin{minipage}[t]{3in}\begin{enumerate}[1),nosep,start=5]\item $\begin{aligned}[t]\ce{n_{\ce{Na}}}&=\dfrac{\text{0.115 \cancel{g}}}{\text{23 \cancel{g}/mol}} \\ &=\text{0.005 mol}\end{aligned}$ \item $\begin{aligned}[t]\ce{n_{\ce{Pb}}}&=\dfrac{\text{\num{2.6e-3} \cancel{g}}}{\text{207.2 \cancel{g}/mol}} \\ &=\text{\num{1.25e-5} mol}\end{aligned}$ \item $\begin{aligned}[t]\ce{n_{\ce{P}}}&=\dfrac{\text{6.2 \cancel{g}}}{\text{31 \cancel{g}/mol}} \\ &=\text{0.2 mol}\end{aligned}$ \par\smallskip $\begin{aligned}[t]\ce{N_{\ce{P}}}&=\text{0.2 mol}\times\text{\num{6.02e23} atoms} \\ &=\text{\num{1.2e23} atoms}\end{aligned}$\end{enumerate}\end{minipage} \end{array}$ \end{enumerate} \end{document}