1) is the answer because the only way to turn it from blue to yellow is to mix it with an acidic solution.
Answer:
Hydrogen carbonate is an acid, sodium Sulfate is a salt.
Explanation:
Hydrogen carbonate is a weak acid because it will partially ionize in water while sodium sulfate is a neutral salt which is formed when neutralization of acid and base takes place
Answer;
H- (negatively charged hydrogen ion)
Explanation;
The hydrogen ion has the same electron configuration as an atom of Helium. -Hydrogen ion is formed when a hydrogen atom loses or gains an electron. A positively charged ion is formed when hydrogen atom loses an electron (remaining with zero electrons) while a negatively charged ion (H-) is formed when a hydrogen atom gains an electron thus having 2 electrons.
-Helium atom has two electrons, therefore, it is similar with an negatively charged hydrogen.
Answer:
The answer would be 200 million years.
Explanation:
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