This is so frustrating I don’t even understand this
Answer:
Acid ammonium carbonate // Ammonium bicarbonate.
Explanation:
Hello, a 4 is missing in the fist H, thus:

The presence of the hydrogen between the ammonium and the carbonates characterizes the salt as an acid salt, so you could name it as acid ammonium carbonate or ammonium bicarbonate (similar to the sodium bicarbonate which is
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Best regards.
Well red blood cells carry oxygen to muscles
Circulatory system is probably the answer you are looking for.
Answer:
Zinc is Zn and Magnesium is Mg