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diff --git a/cer/sem2/boyle/boyle.log b/cer/sem2/boyle/boyle.log
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+entering extended mode
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+ %&-line parsing enabled.
+**boyle.tex
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diff --git a/cer/sem2/boyle/boyle.pdf b/cer/sem2/boyle/boyle.pdf
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diff --git a/cer/sem2/boyle/boyle.tex b/cer/sem2/boyle/boyle.tex
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+++ b/cer/sem2/boyle/boyle.tex
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+\input ../cer.tex
+
+\name{Holden Rohrer}
+\course{FVS Chemistry AB 19.3}
+\teacher{Kerr}
+
+\question{What is the effect of pressure on the volume of a gas?}
+\claim{If the pressure on a gas is increased, then its volume will decrease because the gas molecules will be pushed together. Furthermore, the relationship between pressure, $P$, and volume, $V$, should be an inverse proportion, in which $PV$ is constant and $P=kV^{-1}$ for some constant, $k$}
+
+\long\def\makedata{
+  \dimendef\tablewidth=1
+  \def\text##1{\tiny \hbadness=10000 \tolerance=10000 \hbox to \tablewidth{\hskip1em \vbox{\smallskip \noindent \advance \tablewidth by -2.25em \hsize\@tablewidth ##1 \smallskip} \hskip1em}}
+  \def\htext##1{\head \hbadness=10000 \tolerance=10000 \vrule width 0.05pt \hbox to \tablewidth{\hskip0.5em \vbox{\smallskip \noindent \advance \tablewidth by -1.25em \hsize\@tablewidth ##1 \smallskip} \hskip0.5em}}
+  \def\endliner{\noalign{\hrule height 0.05pt}}
+  \qquad\qquad\qquad Circular Top of the Syringe
+  \smallskip
+  \tablewidth=1in
+  \halign{\vrule width 1pt \text{##} & \vrule width 0.05pt \text{##} & \vrule width 0.05pt \text{##} \vrule width 1pt \crcr
+    \noalign{\hrule height 1pt}
+    \omit \vrule width 1pt \hskip -0.2pt \htext{Diameter ($cm$)} & \omit \vrule width 0.05pt \htext{Radius, $r$ ($cm$)} & \omit \vrule width 0.05pt \htext{Area, $\pi r^2$ ($cm^2$)} \vrule width 1pt \cr \endliner
+    3.60 & 1.80 & 10.2 \cr \noalign{\hrule height 1pt}
+  }
+  \bigskip
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+  \halign{\vrule width 1pt \text{##} & \vrule width 0.05pt \text{##} & \vrule width 0.05pt \text{##} & \vrule width 0.05pt \text{##} & \vrule width 0.05pt \text{##} \vrule width 1pt \crcr
+    \noalign{\hrule height 1pt}
+    Trials & \omit \htext{Mass on Syringe ($kg$)} & \omit \htext{Press\-ure, $P$ (${kg}\over{cm^2}$)} & \omit \htext{Volu\-me, $V$ ($mL$)} & \omit \htext{$PV$} \vrule width 1pt \cr \endliner
+    \omit \vrule width 1pt \hskip -0.2pt \htext{No Book or Weight} & 0 & 1.03 & 50.0 & 51.5 \cr \endliner
+    \omit \vrule width 1pt \hskip -0.2pt \htext{Book Only} &            0.498 & 1.08 & 47.5 & 51.3 \cr \endliner
+    \omit \vrule width 1pt \hskip -0.2pt \htext{Book + 1kg of weight} & 1.498 & 1.18 & 43.5 & 51.3 \cr \endliner 
+    \omit \vrule width 1pt \hskip -0.2pt \htext{Book + 2kg of weight} & 2.498 & 1.27 & 40.5 & 51.4 \cr \endliner
+    \omit \vrule width 1pt \hskip -0.2pt \htext{Book + 3kg of weight} & 3.498 & 1.37 & 37.5 & 51.4 \cr \endliner
+    \omit \vrule width 1pt \hskip -0.2pt \htext{Book + 4kg of weight} & 4.498 & 1.47 & 35.0 & 51.5 \cr
+    \noalign{\hrule height 1pt}
+  }
+}
+
+\evidence{
+  If $PV$ remains constant over several trials of different pressures and volumes (controlling for amount of gas, type of gas, temperature, etc. of course) within a margin of mathematical error, $P=kV^{-1}$ where $k$ is a constant ($P$ and $V$ are inversely proportional). The experimental results confirmed that pressure and volume are inversely related, reaffirming Boyle's Law (pressure and volume are inversely proportional). The power regression confirmed this.
+}
+
+\justification{
+  As partially explored in the claim, increased pressure pushes gas molecules together---decreasing volume. This experiment measures those two features well because the book and extra weights placed on top of the syringe's plunger confer an equally distributed force to the part of the plunger inside the syringe, forcing the air to "push back" harder than if there were no weight at all in order to maintain equilibrium. The only other property of the air in the syringe which can change is volume (which is unconstrained by any other variable than pressure), so equilibrium is always maintained by the volume changing in proportion with Boyle's Law.
+}
+
+\makedoc
+\bye
diff --git a/cer/sem2/cer.tex b/cer/sem2/cer.tex
new file mode 100644
index 0000000..d85d3c2
--- /dev/null
+++ b/cer/sem2/cer.tex
@@ -0,0 +1,96 @@
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+\def\teacher#1{\def\@teacher{#1}}
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+\vskip 2ex plus 0pt
+\noindent Course: \@course
+\vskip 2ex plus 0pt
+\noindent Teacher: \@teacher
+\vskip 2ex plus 0pt
+}
+
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+}
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+}
+
+\def\@question{}
+\def\question#1{\def\@question{#1}}
+\def\@claim{} \def\claim#1{\def\@claim{#1}}
+\long\def\@evidence{} \long\def\evidence#1{\def\@evidence{#1}}
+\long\def\@justification{} \long\def\justification#1{\def\@justification{#1}}
+
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+  \def\endlinex{\cr \noexpand\endliner}
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+}
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+\long\def\pad#1{\smallskip #1 \smallskip}
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+    \item{\pad{{\bf Question:} \@question}}
+    \item{\pad{{\bf Claim:} \@claim}}
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+      \item{ {\bf Evidence:}\par \noindent\makedata\par\smallskip \@evidence \smallskip}
+      \item{ {\bf Justification (Reasoning) of the Evidence:} \par\@justification \smallskip }
+    }}
+  }
+}