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of the Malibu Seawolves swim club practice their butterfly stroke on Wednesday, May 21, 2014 at the Malibu High School pool in Malibu, 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fire</image:title></image:image><lastmod>2017-02-25T20:09:21+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2017/02/15/ch16-cookie-recipe/</loc><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/02/6978326695.png</image:loc><image:title>6978326695</image:title></image:image><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/02/7298301580.png</image:loc><image:title>7298301580</image:title></image:image><lastmod>2017-02-17T03:45:59+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2017/02/12/ch15-celebrate/</loc><lastmod>2017-02-16T18:26:37+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2017/02/02/cp10-mole-map/</loc><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/02/3475338447.png</image:loc><image:title>3475338447</image:title></image:image><lastmod>2017-02-16T17:00:58+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2017/02/06/cp11-more-moles/</loc><lastmod>2017-02-16T17:00:44+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2017/02/15/cp16-vacation-time/</loc><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/02/4171196515.png</image:loc><image:title>4171196515</image:title></image:image><lastmod>2017-02-15T21:10:12+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2017/02/09/ch14-test-prep/</loc><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/02/4738549798.png</image:loc><image:title>4738549798</image:title></image:image><lastmod>2017-02-15T18:37:05+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2017/02/13/cp15-hydration/</loc><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/02/5352643600.png</image:loc><image:title>5352643600</image:title></image:image><lastmod>2017-02-14T19:50:28+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2017/02/09/cp14-hydrate-mania/</loc><lastmod>2017-02-10T17:34:45+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2017/02/08/hydrate-lab-assistance-2/</loc><lastmod>2017-02-09T22:16:10+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2011/09/08/ap-chemistry-lab-02-formula-of-a-hydrate/</loc><lastmod>2017-02-09T02:35:47+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2011/09/09/live-blogging-hydrate-chem-lab/</loc><lastmod>2017-02-09T02:34:56+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2014/01/21/hydrate-lab-assistance/</loc><lastmod>2017-02-09T02:33:42+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2017/02/08/ch13-lab-recap/</loc><lastmod>2017-02-08T22:35:29+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2017/02/08/cp13-empirical-formulas/</loc><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/02/3320141843153.jpg</image:loc><image:title>3320141843153</image:title></image:image><lastmod>2017-02-08T22:05:02+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2017/02/07/cp12-counted-vs-mass/</loc><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/02/count.jpg</image:loc><image:title>count</image:title></image:image><lastmod>2017-02-08T19:28:36+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2017/02/07/ch12-the-crucible/</loc><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/02/cuso4crystal.gif</image:loc><image:title>cuso4crystal</image:title></image:image><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/02/c45.gif</image:loc><image:title>c45</image:title></image:image><lastmod>2017-02-07T18:36:27+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2017/02/05/ch11-the-goat/</loc><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/02/copper_sulfate.jpg</image:loc><image:title>copper_sulfate</image:title></image:image><lastmod>2017-02-06T04:49:09+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2017/02/01/ch10-percent-composition/</loc><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/02/13971476152.png</image:loc><image:title>13971476152</image:title></image:image><lastmod>2017-02-02T21:22:42+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2017/01/30/ch09-mapping/</loc><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/moles-013.jpeg</image:loc><image:title>moles-013</image:title></image:image><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/moles-012.jpeg</image:loc><image:title>moles-012</image:title></image:image><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/moles-011.jpeg</image:loc><image:title>moles-011</image:title></image:image><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/moles-010.jpeg</image:loc><image:title>moles-010</image:title></image:image><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/moles-009.jpeg</image:loc><image:title>moles-009</image:title></image:image><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/moles-008.jpeg</image:loc><image:title>moles-008</image:title></image:image><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/moles-007.jpeg</image:loc><image:title>moles-007</image:title></image:image><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/moles-006.jpeg</image:loc><image:title>moles-006</image:title></image:image><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/moles-005.jpeg</image:loc><image:title>moles-005</image:title></image:image><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/moles-004.jpeg</image:loc><image:title>moles-004</image:title></image:image><lastmod>2017-01-31T23:02:39+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2017/01/30/cp09-pennium/</loc><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/344156557.png</image:loc><image:title>344156557</image:title></image:image><lastmod>2017-01-31T23:00:55+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2016/09/24/cp12-reactions-lab/</loc><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2016/09/ppts.png</image:loc><image:title>ppts</image:title></image:image><lastmod>2017-01-31T21:50:16+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2016/10/03/poly-atomic-ions/</loc><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2016/10/rosh-hashanah-blessings-7.jpg</image:loc><image:title>rosh-hashanah-blessings-7</image:title></image:image><lastmod>2017-01-31T21:50:00+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2016/09/08/ch07-lines/</loc><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2016/09/balmer.jpeg</image:loc><image:title>balmer</image:title></image:image><lastmod>2017-01-31T21:49:43+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2016/12/06/cp37-implications/</loc><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2016/12/pikapika.png</image:loc><image:title>pikapika</image:title></image:image><lastmod>2017-01-31T21:49:18+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2017/01/23/cp06-aluminum-foil-lab/</loc><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/391746608.png</image:loc><image:title>391746608</image:title></image:image><lastmod>2017-01-31T21:31:28+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2017/01/24/cp08-dimensional-analysis/</loc><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/42s.jpg</image:loc><image:title>42s</image:title></image:image><lastmod>2017-01-30T22:46:30+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2017/01/26/ch08-mole-applications/</loc><lastmod>2017-01-27T18:05:06+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2017/01/24/ch07-moles/</loc><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/bio-avogadro.jpg</image:loc><image:title>bio-avogadro</image:title></image:image><lastmod>2017-01-27T17:58:54+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2017/01/24/cp07-units-units-units/</loc><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/304526237.png</image:loc><image:title>304526237</image:title></image:image><lastmod>2017-01-26T17:35:27+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2017/01/20/ch06-the-demo/</loc><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/elephants-toothpaste-experiment-594845575.jpg</image:loc><image:title>Elephants toothpaste experiment</image:title><image:caption>Elephants toothpaste. This is a demonstration of the rapid decomposition of hydrogen peroxide. A 30% solution of hydrogen peroxide is placed in a conical flask, along with some liquid soap (such as washing-up liquid) and some food colouring. When a catalyst such as potassium iodide is added, the hydrogen peroxide rapidly decomposes to water and oxygen. The oxygen is trapped as bubbles in the liquid soap and foams out of the flask. The reaction is exothermic, the foam can get very hot.</image:caption></image:image><lastmod>2017-01-23T17:47:15+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2017/01/19/ch05-respect/</loc><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/74852746.jpg</image:loc><image:title>74852746</image:title></image:image><lastmod>2017-01-19T18:55:58+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2017/01/16/cp04-sig-fig-math/</loc><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/9423385629.png</image:loc><image:title>9423385629</image:title></image:image><lastmod>2017-01-19T18:48:07+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2017/01/19/cp05-data-collection/</loc><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/logger-pro.png</image:loc><image:title>logger-pro</image:title></image:image><lastmod>2017-01-19T18:43:50+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2017/01/16/ch04-new-math/</loc><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/11322953266.png</image:loc><image:title>11322953266</image:title></image:image><lastmod>2017-01-19T15:27:21+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2012/10/04/robotics-lego-project-2/</loc><lastmod>2017-01-17T18:39:29+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2017/01/13/ch03-significant-figures/</loc><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/thermo-g.jpg</image:loc><image:title>thermo-g</image:title></image:image><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/thermo-d.jpg</image:loc><image:title>thermo-d</image:title></image:image><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/flask-250.jpg</image:loc><image:title>flask-250</image:title></image:image><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/cyl-1000.jpg</image:loc><image:title>cyl-1000</image:title></image:image><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/cyl-100.jpg</image:loc><image:title>cyl-100</image:title></image:image><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/cyl-25.jpg</image:loc><image:title>cyl-25</image:title></image:image><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/buret.jpg</image:loc><image:title>buret</image:title></image:image><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/beaker-1000.jpg</image:loc><image:title>beaker-1000</image:title></image:image><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/beaker-50.jpg</image:loc><image:title>beaker-50</image:title></image:image><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/balance-t.jpg</image:loc><image:title>balance-t</image:title></image:image><lastmod>2017-01-16T22:24:21+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2017/01/13/cp03-sig-figs/</loc><lastmod>2017-01-16T17:13:10+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2017/01/11/ch02-volumes-and-mass/</loc><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/4273968004.png</image:loc><image:title>4273968004</image:title></image:image><lastmod>2017-01-12T04:24:20+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2017/01/11/cp02-measurement/</loc><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/664439091.png</image:loc><image:title>664439091</image:title></image:image><lastmod>2017-01-12T04:20:42+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2017/01/11/cp01-happy-new-year/</loc><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/stats-cp1.png</image:loc><image:title>stats-cp</image:title></image:image><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/4955476088.png</image:loc><image:title>4955476088</image:title></image:image><lastmod>2017-01-11T18:54:52+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2017/01/09/ch01-welcome-baaaack/</loc><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/final-stats.png</image:loc><image:title>final-stats</image:title></image:image><image:image><image:loc>https://chemteacher.org/wp-content/uploads/2017/01/14618772953.png</image:loc><image:title>14618772953</image:title></image:image><lastmod>2017-01-09T23:27:04+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2016/12/12/cp41-the-final-exam/</loc><lastmod>2016-12-13T02:22:18+00:00</lastmod><changefreq>monthly</changefreq></url><url><loc>https://chemteacher.org/2016/12/11/ch41-the-final-ex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