<ol>
<li>Do you really have to draw that giant table? I mean i can work it out in my head, but I find drawing the table is more challenging</li>
<li>Do they deduct marks if you perform the quadratic? I keep forgeting to say whether x is roughly equal to 0 or the molarity.</li>
</ol>
<p>Can't you just write something like x^2/1.2 - x = Keq and then jsut solve for x?</p>
<p>Also, how do they stress significant digits??</p>
<p>what is significant digits for exponents,
for example if you are given 0.0015, and you raise e to the power of that, how many sig.digs. are there now?</p>
<p>You mean on the FRQ? For the approximation, they wouldn’t deduct points so long as you showed that the end result was small enough compared to initial to warrant the approximation–around 5%. What I would do is do the math in your head, write down the results, and then try to set up the table.</p>