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.
CaCO3 is a white powder at room temperature. It is soluble in water. Its melting point is 1339 ÌC (2442.2 ÌF). CaCO3 is widely used in building industry such as making cement, paint wall. It's also the main component of chalk used for blackboard in the old times. Example Reactions: