<p>What is the mass-to-charge ratio for Ca2+ (whose mass number is 40)? The charge on an electron is −1.602 x 10^−19 C.</p>
<p>hmmm…
unless i’ve forgotten a lot from last year, don’t even worry about it. hah.
i don’t remember using mass-to-charge ratios in either my textbook or my AP review book (princeton review)
and i aced the class and got a 5 on the exam</p>
<p>^— same. A in class, 5 on exam, 790 on sat II</p>
<p>Uh… (−1.602 x 10^−19 C) * 2 / 40 ??? (And I am just guessing here)</p>
<p>I seriously don’t know, and I don’t remember doing any mass-to-charge things last year.</p>
<p>(100 in the class, 5 on AP, 800 SAT 2)</p>