If a batch formula for 2130 kg of window glass consists of 500 k of CaCO3, 1150 k SiO2, and an unknown amount of Na2CO3. Calculate the amount of Na2CO3. (Keep in mind, as the carbonates break down, CO2 gas is liberated so the unknown amount is not the summation of the masses). Please show your work and please do not answer with a bunch of random info or a link...I need actual calculation.