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% Document Info
\author{Shanaya kalra}
\pdfinfo{
  /Title (air-and-atmosphere-chem-u1.pdf)
  /Creator (Cheatography)
  /Author (Shanaya kalra)
  /Subject (Air and atmosphere chem u1 Cheat Sheet)
}

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        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
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\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{Air and atmosphere chem u1 Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{Shanaya kalra} via \textcolor{DarkBackground}{\uline{cheatography.com/208443/cs/45040/}}}
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  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}Shanaya kalra \\
  \uline{cheatography.com/shanaya-kalra} \\
  \end{tabulary}
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  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Not Yet Published.\\
   Updated 18th November, 2024.\\
   Page {\thepage} of \pageref{LastPage}.
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  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
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\begin{multicols*}{3}

\begin{tabularx}{5.377cm}{p{0.4977 cm} p{0.4977 cm} }
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\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Intro}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{Air is found everywhere on Earth. The Earth is surrounded by a envelope of air. this air extends up to {\bf{200km}} in space. We are living at the bottom of the ocean air.} \tn 
% Row Count 4 (+ 4)
% Row 1
\SetRowColor{white}
\mymulticolumn{2}{x{5.377cm}}{{\emph{Earth is surrounded by envelope of air means that the air covers the Earth. we are living at the bottom of the ocean air means we live at the lowest point of ocean where gasses are present.}}} \tn 
% Row Count 8 (+ 4)
% Row 2
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\mymulticolumn{2}{x{5.377cm}}{The atmosphere contains {\bf{78.3\% Nitrogen}}, {\bf{20.9\% Oxygen}}, and {\bf{1\% other gasses and water vapour}}.} \tn 
% Row Count 11 (+ 3)
% Row 3
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\mymulticolumn{2}{x{5.377cm}}{Other gasses can include, carbon dioxide, noble gasses, ozone etc.} \tn 
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% Row 4
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\mymulticolumn{2}{x{5.377cm}}{Noble gasses can include, Helium, neon, argon, krypton, xenon and radon.} \tn 
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\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Water vapour}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{Water vapour is different from places to places. Arid regions have less water vapour compared to wetlands. In addition to water vapour there are some impurities such as {\bf{Dust particles}}, {\bf{carbon particles}}, {\bf{Carbon monoxide}}, {\bf{Nitrogen dioxide}}, {\bf{Sulphur dioxide}} and **Chlorofluorocarbons ( CFC'S)} \tn 
% Row Count 7 (+ 7)
% Row 1
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\mymulticolumn{2}{x{5.377cm}}{{\emph{So Arid regions are regions with very little water. impurities mean unwanted dust particles.}}} \tn 
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\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Formula}}  \tn
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\mymulticolumn{2}{x{5.377cm}}{Phosphorus + oxygen → Phosphorus pentoxide} \tn 
% Row Count 1 (+ 1)
% Row 1
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\mymulticolumn{2}{x{5.377cm}}{Phosphorus pentoxide + water → Phosphoric acid} \tn 
% Row Count 2 (+ 1)
% Row 2
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\mymulticolumn{2}{x{5.377cm}}{Tip: In any branch of science we write '=' as '→'} \tn 
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\begin{tabularx}{5.377cm}{p{0.4977 cm} p{0.4977 cm} }
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\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{INVS 5.1 To show the presence of o2 and n2 in air}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{Materials: Test tube ( 8cm), graph paper (5cm), pea sized phosphorus, cotton wool plug, Beaker and water.} \tn 
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% Row 1
\SetRowColor{white}
\mymulticolumn{2}{x{5.377cm}}{Take a test tube 8cm long and fix it along a side of graph paper. in the tube place a pea sized phospohorus. over there also fix a cotton wool plug. invert ( put ) the test tube into the beaker and pour what it in till level 0. Now if you leave it undisturbed and untouched for a hour you will notice that the water level has risen up. why does this happen?} \tn 
% Row Count 11 (+ 8)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{This happens because the air present in the air slowly reacts with phosphorus to form {\bf{phosphorus pentoxide gas.}}  As the volume of oxygen is completely removed by phosphorus, therefore the pressure of air in the test tube falls and to make up for this loss air from outside forces the water up.} \tn 
% Row Count 17 (+ 6)
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% That's all folks
\end{multicols*}

\end{document}