Answer:
Sodium chloride
Explanation:
There are several salts in seawater, but the most abundant is ordinary table salt or sodium chloride (NaCl). Sodium chloride, like other salts, dissolves in water into its ions, so this is really a question about which ions are present in the greatest concentration. Sodium chloride dissociates into Na+ and Cl- ions.
Answer:
I think the answer is test tube 2
Hey there!
CaCO₃ + HCl → CaCl₂ + CO₂ + H₂O
We have to balance Ca, C, O, Cl, and H.
Let's balance H.
One on the left, two on the right. Add a coefficient of 2 in front of HCl.
CaCO₃ + 2HCl → CaCl₂ + CO₂ + H₂O
Balance Ca.
One on the left, one on the right. Already balanced.
Balance C.
One on the left, one on the right. Already balanced.
Balance O.
Three on the left, three on the right. Already balanced.
Balance Cl.
Two on the left, two on the right. Already balanced.
Our final balanced equation:
CaCO₃ + 2HCl → CaCl₂ + CO₂ + H₂O
The answer is C. 1; 2; 1; 1; 1.
Hope this helps!