Answer:
Explanation:
Mechanical digestion involves physically breaking down food substances into smaller particles to more efficiently undergo chemical digestion. The role of chemical digestion is to further degrade the molecular structure of the ingested compounds by digestive enzymes into a form that is absorbable into the bloodstream.
Is this chemistry or something else?
Answer:
Neutral (Option D)
Explanation:
[H₃O⁺] = [OH⁻] → Neutral solution pH = 7
[H₃O⁺] < [OH⁻] → Alkaline / Basic solution pH > 7
[H₃O⁺] > [OH⁻] → Acidic solution pH < 7
Iron gains three electrons
The formula for Aluminium Nitrate is

.
This is because aluminium has a 3+ charge and nitrate has a 1- charge, so you need 3 of them to balance out aluminium.
Therefore, you have
one ion of aluminium.