If 2.50 metric tons of bornite is reacted with excess o2 and the process has an 86.3% yield of copper, what mass of copper is produced?

Answer : The mass of copper produced is,

Explanation :  Given,

Mass of bornite =

conversion used :

Molar mass of = 342.678 g/mole

First we have to calculate the moles of .

Now we have to calculate the moles of .

The balanced chemical reaction will be,

From the balanced reaction, we conclude that

As, 2 moles of react to give 6 moles of

So, 7295.48 moles of react to give moles of

Now we have to calculate the mass of

The theoretical yield of  = 1390795.716 g

The actual yield of  = ?

Now we have to calculate the actual yield of .

Therefore, the mass of copper produced is,

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.