Identify elements from A, B, C, and D and justify your answer.
A: On heating gives off gas and leaves some residue.
B: Burns in the air to form carbon dioxide and water.
C: Burns in the air to form carbon dioxide gas only.
D: Burns in the air to form water only.
Answers
Answered by
13
Answer:
A - calcium carbonate on heating gives colourless gas carbon dioxide and residue calcium oxide.
B - Methane burns with oxygen to form carbon dioxide and water.
C - When carbon burns completely excess of air (oxygen) it forms carbon dioxide. But if there is incomplete combustion, carbon monoxide is formed.
D - Hydrogen burns in air to form water
Answered by
6
Answer:
yep he is correct the above one
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