Answer:
96.66 g of Fe₃O₄
Explanation:
In order to calculate the weight of Fe₃O₄ in 100.0 g of Fe₂O₃ we need elements in common between both substances, for instance, the mass of Fe in each one. We will use the molar mass of Fe = 55.84g/mol The conversion factors we need are:
- 159.69 g of Fe₂O₃ contain 2 × 55.84 = 111.68 g of Fe
- 231.54 g of Fe₃O₄ contain 3 × 55.84 = 167.52 g of Fe
Then, we can use proportions:
The periodic table is useful tool for chemist since we can see what is the atomic and mass number for each atom.
Atomic number is equal to how many protons and electrons in it
Mass number is equal to protons + Neutrons.
"Atoms have an equal proton and neutron charge."