https://padlet.com/302528/rqwa3av3awlh Made with whimsy en-us 2017-04-25 16:27:25 UTC 2023-05-28 14:35:03 UTC hello@padlet.com 302528 https://padlet.com/302528/rqwa3av3awlh/wish/168165512 H 
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Hydrogen is present in all organic compounds. ]]> 2017-04-25 16:41:44 UTC https://padlet.com/302528/rqwa3av3awlh/wish/168165512