Pyramids were built in Ancient Egypt as tombs, or burial places, for Egyptian pharaohs, or kings. They believed that the pyramids made you immortal. The Ancient Egyptians believed in an afterlife, so it was very important to them to protect the bodies of their pharaohs.
CaCO3, or calcium carbonate, has a molar mass of 100.09 grams per mole. This means there are roughly 566 grams of CaCO3.
Molar mass of CO2 = 44 g / mol. Molar mass of H2O is = 18 g / mol. from the equation, 2*84(=168) g of NaHCO3 produces 44 g of CO2 and 18 g of H2O. Total mass of CO2 and H2O produced by 168g of NaHCO3 = 44 + 18 = 62g. Total mass of CO2 in 0.872 g is = (44g of CO2/62g total(CO2&H2O))(0.872g total) = 0.61884g CO2. From the equation 44g of CO2 is produced by 168g of NaHCO3.