Chemistry, 11.03.2021 20:40 zanaplen27
A student weighs and then heats a petri dish of potassium carbonate. When heated, solid potassium carbonate breaks down into solid potassium oxide and carbon dioxide gas. The student notes that after heating, the mass of the solid decreases. How might a student explain the difference observed?
A. Some of the mass left as a gas
B. The mass that was lost was converted to energy
C. Mass is not conserved in reactions that produce carbon dioxide
D. Some of the potassium carbonate evaporated when heated
Answers: 1
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A student weighs and then heats a petri dish of potassium carbonate. When heated, solid potassium ca...
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