Answer:
C: Sodium
Explanation:
Iron had a way higher density neon has way to know as well as carbon and the closest one is sodium
The main job of these systems is to break down food and for it to exit the body after taking out of it what is necessary such as nutrients
Answer:
Fe₂O₃
Explanation:
When Fe is burned it can form iron (II) oxide or iron (III) oxide. The reactions are:
a) Fe + 1/2 O₂ → FeO
b) 4 Fe + 3 O₂ → 2 Fe₂O₃
In the reaction "a", the mass ratio of FeO to Fe is 71.84 g FeO:55.85 g Fe =
1.29 g FeO: 1 g Fe
In the reaction "b", the mass ratio of Fe₂O₃ to Fe is 319.3 g Fe₂O₃: 223.4g Fe =
1.43 g Fe₂O₃ : 1 g Fe
According to the experimental data, the mass ratio of the product to Fe is 165.5g compound: 115.0 g Fe =
1.43 g compound: 1 g Fe
Since this ratio is equal to that of reaction "b", the empirical formula of the solid is Fe₂O₃.