SCIENCE LAB
'(<a href="http://www.j-archive.com/media/2005-10-28_J_06.jpg" target="_blank">Kelly of the Clue Crew juices a lemon in the chemistry lab.</a>)  This acid--C<sub>6</sub>H<sub>8</sub>O<sub>7</sub>--is found in the juice I'm <a href="http://www.j-archive.com/media/2005-10-28_J_06a.jpg" target="_blank">extracting</a>'
citric acid