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Calcium Carbonate</u>
. Calcium carbonate is another example of a compound with both ionic and covalent bonds. Here calcium acts as the cation, with the carbonate species as the anion. These species share an ionic bond, while the carbon and oxygen atoms in carbonate are covalently bonded.</h2><h2 />
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I believe the answer is 2
Answer:Why is Dalton credited with proposing the first atomic theory if Democritus was talking about atoms almost 2,200 years earlier?
- Democritus' ideas were not supported by evidence
- Dalton's theory was the first scientific theory because it relied on scientific investigative processes.
- Dalton's theory was supported by evidence and repeated investigation.
Explanation: 1: Democritus' ideas were not supported by evidence
2: Dalton's theory was the first scientific theory because it relied on scientific investigative processes.
3: Dalton's theory was supported by evidence and repeated investigation.
Answer: BaCO3(s) + 2H+(aq) --> Ba+2 + H2O(l) + CO2(g)
Explanation: Net ionic equations show only the species or atoms that participate in the reaction, in this case gas-forming
When solid barium carbonate is combined with excess aqueous hydroiodic acid the reaction that take place is.
BaCO3(s) + 2HI(aq) --> BaI2 (aq) + H2O(l) + CO2(g)
To write a ionic equation is necesary to separte the species that are dissociated in water (ag) and expresed it as ions showing the charge
BaCO3(s) + 2I-(aq) + 2H+(aq) --> Ba+2 + 2I- (aq) + H2O(l) + CO2(g)
Since I- is present in both sides of the reaction, it's eliminated in the net ionic equation, and the final expression is:
BaCO3(s) + 2H+(aq) --> Ba+2 + H2O(l) + CO2(g)