Wrong Answer in CB SAT II Book?

Test Preparation SAT Subject Test Preparation
1

<p>The Official Study Guide for All SAT Subject Tests
page 296, number 35, Chemistry.</p>

<p>Fe2O3 + CO yields Fe + CO2
when the above is balanced, what is coefficient of Fe2O3?</p>

<p>they said answer was 1.....</p>

2

<p>I think that’s right. Balanced is:</p>

<p>Fe2O3 + 3CO to 2Fe + 3CO2</p>

3

<p>O thanks, i see it now, but you would think the CO and CO2 could not balance.</p>

<p>How did you solve this problem? did you do redox?</p>

4

<p>I didn’t do it redox, I just did it regularly. I guess you could do it redox, seems to me it would take some more time (?)</p>

5

<p>Dont question collegeboard. Dont.</p>