6.50 mol of vanadium(II) oxide react with 4.50 mol of iron (III) oxide according to the following balanced equation 2VO + 3Fe^2O^3 ---> V^2O^5 +6FeO Determine the maximim amount of iron (III) oxide that can be produced in moles and identify the limiting reagent.

a compound is a molecule made of atoms from different elements.

a. by the combination of an unlimited number of elements

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.