I think that it's cannot include supernatural explanations, or C.
If i got it wrong sorry
Answer: After three half-lives 1/8 (12.5%) of the original sample remains
Answer:
Explanation:
Ionic Compounds Are Balanced
Table salt is an example of an ionic compound. Sodium and chlorine ions come together to form sodium chloride, or NaCl. The sodium atom in this compound loses an electron to become Na+, while the chlorine atom gains an electron to become Cl-
Fe3O4 + 4H2 = 3Fe + 4H2O
Fe3O4 + 4H2SO4 = Fe2(SO4)3 + FeSO4 + 4H2O
Aluminum is 26.982 grams per mole, so 26.982/19.9 will give you the moles 1.3558794
