Remove empty pages between chapters in [oneside,openany]{book}
===

I get an empty page between each chapter, despite the fatc that my latex class is defined WITH oneside and openany. I searched what the setting that causes this behavior, but still can not find it.
the settings from the premble.tex:

    \documentclass[12pt,oneside,openany,doublespacing]{book}
    \setlength{\headheight}{0in}
    \setlength{\headsep}{0in}
    \setlength{\topmargin}{0in}
    \setlength{\oddsidemargin}{0in}
    \setlength{\evensidemargin}{0in}
    \setlength{\footskip}{0in}
    \setlength{\textwidth}{6.5in}
    \usepackage{graphicx}
    \usepackage{cleveref}
    \crefname{figure}{Figure}{Figures}
    \crefname{table}{Table}{Tables}
    \crefname{eqnarray}{Equation}{Equations}
    \crefname{equation}{Equation}{Equations}
    \crefname{appendix}{Appendix}{Appendixes}
    \usepackage[version=3]{mhchem}
    \usepackage{amsmath}
    \usepackage{cite}
    \usepackage{wrapfig}
    \usepackage{appendix}
    \usepackage[perpage,symbol*]{footmisc}
    \usepackage{setspace}
    \usepackage[inner=1.25in,outer=1in,top=1in,bottom=1.35in,foot=0.8in,dvips]{geometry}
    \usepackage[prefix]{nomencl}
    \usepackage{times,helvet,pdfsync}
    \renewcommand\contentsname{\centerline{Table of Contents}}
    \renewcommand\listfigurename{\vspace{-1in}\centerline{List of Figures}}
    \renewcommand\listtablename{\vspace{-1in}\centerline{List of Tables}}
    \renewcommand{\nomname}{\vspace{-1in}\centerline{List of Abbreviations and Symbols}}
    \newcommand{\myfootnote}{\footnote}
    \renewcommand{\topfraction}{0.9}
    \renewcommand{\textfraction}{0.1}
    \makeatletter
    \renewcommand*\l@chapter[2]{%
      \ifnum \c@tocdepth >\m@ne
        \addpenalty{-\@highpenalty}%
        \vskip 1.0em \@plus\p@
        \setlength\@tempdima{1.5em}%
        \begingroup
          \parindent \z@ \rightskip \@pnumwidth
          \parfillskip -\@pnumwidth
          \leavevmode \bfseries
          \advance\leftskip\@tempdima
          \hskip -\leftskip
          #1\nobreak\normalfont\leaders\hbox{$\m@th
            \mkern \@dotsep mu\hbox{.}\mkern \@dotsep
            mu$}\hfill\nobreak\hb@xt@\@pnumwidth{\hss #2}\par
          \penalty\@highpenalty
        \endgroup
      \fi}
    \makeatother
    %grad school requirement center the Chapter, Appendix and Bibliopgraphy headings
    \makeatletter
    \def\@makechapterhead#1{%
      \vspace*{50\p@}%
      {\parindent \z@ \centering\normalfont
        \ifnum \c@secnumdepth >\m@ne
          \if@mainmatter
             \huge\bfseries \@chapapp\space \thechapter
            \par\nobreak
            \vskip 20\p@
          \fi
        \fi
        \interlinepenalty\@M
         \Huge \bfseries #1\par\nobreak
        \vskip 40\p@
      }}
    \def\@makeschapterhead#1{%
      \vspace*{50\p@}%
      {\parindent \z@ \centering
        \normalfont
        \interlinepenalty\@M
        \Huge \bfseries  #1\par\nobreak
        \vskip 40\p@
      }}
    \makeatother
    \pagestyle{plain}
    \raggedbottom
    \hyphenation{mo-no-den-dron}
    \makeatother
    \makenomenclature
 
I will greatly appreciate any help!