It's an example of a molecule
Answer:
1+2 = 12
Explanation:
this is a math equation, not a chemical formula
Answer: 3.35x10²³atoms H2
Explanation: solution attached:
Convert mass of Al to moles
Do the mole to mole ratio between Al and H2
Convert moles of H2 to atoms using Avogadro's number.
The SA node, the cardiac center in the medulla oblongata, and the endocrine system