When calcium carbonate is heated strongly, it forms calcium oxide and carbon dioxide. what mass of calcium carbonate is needed to make 50.0 g of calcium oxide?

Long term exposure to waves can cause sunburns and skin cancer. a) visible b) infrared c) gamma rays d) ultraviole

Define the kinetic molecular theory

In the following table, all the columns for the element calcium are filled out correctly. element electron structure of atom electron structure of ion net ionic charge calcium 1s22s22p63s23p64s2 1s32s22p63s23p64s1 +1 true false