Chemistry June 2014 Regents Discussion

Pre-College Issues High School Life
101

<p>No you had to do both the oxidation and reduction reaction then balance the electrons</p>

102

<p>There goes my 100 streak…</p>

103

<p>Looks like its going to be 3, 2 if they are lenient wrong, not too bad.</p>

104

<p>answers are posted at
<a href=“Regents Chemistry Exam Explanations June 2014”>http://www.kentchemistry.com/RegentsExams/regents_jun_2014.htm&lt;/a&gt;&lt;/p&gt;

105

<p>Guys for te one with the boiling point of ethanol, I might have put 77 I’m not sure. But would tht be included in the range of answers?</p>

106

<p>@Indiangurl‌ i got 79 but there is a plus or minus range, so i think your fine</p>

<p>Thank god I got the balancing one right</p>

107

<p>Okay! And for the one with finding the new pressure or whatever, I just set up a ratio. Is that okay?</p>

108

<p>For the question with the moles of co2
I got 7.72586
I got tht because I didn’t round off the mass of co2
Will it work?</p>

109

<p>@palamedes yeah I didn’t round off either…I hope it’s okay</p>

110

<p>For the one where u had to draw ethanol, I put my OH to the side of a carbon not on top, is that okay?</p>

111

<p>A 2.50-liter aqueous solution contains 1.25 moles of dissolved sodium chloride. The dissolving of NaCl(s) in water is represented by the equation below.</p>

<p>Is the answer .500M only or can it be .5M also?</p>

112

<p>I don’t think it matters?</p>

113

<p>@Indiangurl - Yeah, it’s the same thing.</p>

<p>@joshgindi - I don’t think you had to use sig figs.</p>

114

<p>@sunsh0wers‌ sorry about that. For which one is it the same thing? The organic compound one?</p>

115

<p>I am really stressing over this. For the first short answer question I only put electrons surrounding the carbon and not the bromine. This would be the only question I got wrong and I am praying it is right in some way even though I’m 99%sure it’s wrong.</p>

116

<p>I am so mad about this exam. I left it feeling extremely confident, but then I went to check my answers online at <a href=“Regents Chemistry Exam Explanations June 2014”>http://www.kentchemistry.com/RegentsExams/regents_jun_2014.htm&lt;/a&gt; and I found out that I messed up the solubility curve question! I must have accidently misread the graph and put 74 instead of 79… so that basically blew my chance of getting 100! And it was such a stupid mistake too! Ahhhh I hate this exam. Sorry I really needed to rant lol. i’m done now. At this point I hoping that I didn’t screw anything else up and I hope I can get a 98. The curve for this exam is pretty bad… but at least its better than English!</p>

117

<p>@Indiangurl‌ - Yep, the organic compound one! OH-CH2-CH2-CH3 is the same thing as CH3-CH2-CH2-OH, which are the same as placing the OH on top of one of the outer carbons. :)</p>

<p>@gogirl08 - I feel the same way about the curve. /: The score you get should just be the number of questions you get right out of 85.</p>

118

<p>How did u guys set up the equation go find te new pressure?</p>

119

<p>@Indiangurl‌ i did 6.(some#) / by 293K = x/313K</p>