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<div class="moz-cite-prefix">On 10/13/21 9:06 PM, wrote:<br>
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cite="mid:64218daab60d4880a6f7649bd3007965@SA1PR01MB6528.prod.exchangelabs.com">
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Also, for reaction 4 to find q, why do we multiply by the
density of NaCl?</div>
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<p>You are using the equation <math
xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>q</mi><mo>=</mo><mi>m</mi><msub><mi>c</mi><mi>s</mi></msub><mi
mathvariant="normal">Δ</mi><mi>T</mi></mrow><annotation
encoding="TeX">q=mc_s\DeltaT</annotation></semantics></math>
<math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi></mi>,
<font face="Helvetica, Arial, sans-serif">the mass you need
is the mass of the solution, so you have find the mass of
the solution by multiplying the density of the solution by
the volume of the solution. The densities and specific
heat capacities of all your solutions are found on the
laboratory report form.</font></mrow></semantics></math></p>
<p><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><font
face="Helvetica, Arial, sans-serif"></font><br>
</mrow></semantics></math></p>
<p><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><br>
</mrow></semantics></math></p>
<p><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow></mrow><annotation
encoding="TeX">ta=mc_s\</annotation></semantics></math><br>
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<pre class="moz-signature" cols="72">--
Andrew J. Pounds, Ph.D. (<a class="moz-txt-link-abbreviated" href="mailto:pounds_aj@mercer.edu">pounds_aj@mercer.edu</a>)
Professor of Chemistry and Computer Science
Director of the Computational Science Program
Mercer University, Macon, GA 31207 (478) 301-5627
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