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Chemistry, 19.11.2020 02:50 gshreya2005
Which of these is the best evidence that a chemical reactions occurs when coal burns?
A-Coal is made up of more than one element
B-a new substance is produced
C-Oxygen is present
D-The shape of coal changes
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Which of these is the best evidence that a chemical reactions occurs when coal burns?
A-Coal is mad...
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