<p>On 2008 test, form B, part A, question 1:</p>
<p>In (c) ii, when you find the molar concentration of AsF3 and F2 why do you multiply the original concentration of AsF5 by .277? I know it decomposed by 27.7% but why wouldn’t you multiply by .723 which is the amount left?</p>
<p>Thank you for any help!!</p>