The one on the left is pure because it is made out of one single material. The one on the right is a mixture because it is made out of multiple materials
Answer:
2. Copper (II) carbonate plus sulfuric acid produces copper (II) sulfate and carbon dioxide and water.
- We need the "II" after copper to specify what charge it is. It's +2 because carbonate is -2.
3. Calcium hydroxide plus carbon dioxide gas produces calcium carbonate and water.
Answer: Its option "A" Both A and R are true and R is the correct explanation of A.
Hope it helps
