ronaldhernandez598
22.09.2020 •
Chemistry
5.What happens in low pressure?
(1 Point)
cool air sinks
cold air rises
warm air rises
warm air sinks
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Ответ:
15 %
Explanation;Mass of hydrogen collected after decomposition = 41.4 grams
Mass of the initial compound = 276 grams
Percentage composition of hydrogen;
= (41.4 /276) × 100%
= 15.0 %