I think it's Potassium iodide because it has the highest solubility at 25°C.
Control group: 50 dogs continuing their normal diet
Experiments group: 50 dogs chosen to eat the new food
Independent variable: dog food
Dependent variable: the dogs’ weight
Answer:
The answer is B. Atomic Mass
Yes it need to be like that cause when it like that it like that
Ammonium is NH₄⁺ and Carbonate is CO₃⁻² => Ammonium Carbonate is (NH₄)₂CO₃