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Chemistry, 05.12.2019 19:31 abelxoconda

Which equation shows a conservation of mass?
(1) na + cl2 --> nacl
(2) al + br2 --> albr3
(3) h2o --> h + o2
(4) pcl5 --> pcl3 + cl2

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Which equation shows a conservation of mass?
(1) na + cl2 --> nacl
(2) al + br2 --&...
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