IQ test ! a black powder is placed in a long glass tube.Hydrogen gas is passed into the tube so that the hydrogen sweeps out all gases. the powder turns red-orange , and water vapor can be seen condensing at the unheated far end of the tube . the red orange color remains the tube cools. questions 1. was the originak black substance an element ?? 2. is the new red orange substance an element ??? answer w/ reason ahh ... #i need your answer .. #ung mga best in science jan ohh
Posted on: Sun, 06 Jul 2014 09:39:33 +0000
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