Explanation:
Calcium is the element that has 2 valence electrons.
Jellyfish aren't necessarily bad or do bad things humans do find that the tentacles that happen to "shock" or "electructe" people are bad. As well as the way jellyfish live in one grouping it is rare but you can find jellyfish out of a group, they do this that way they can eat and stay away from predators.
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Answer:
sugar and oxygen
Explanation:
sugar (glucose) and oxygen
Explanation:
Calcium carbonate (Chalk) is a chemical compound, with the chemical formula CaCO3. Calcium carbonate (Chalk) is a chemical compound, with the chemical formula CaCO3.
Answer: Use the titration formula
Explanation: