Final answer:
To calculate the mass of scheelite that contains a million oxygen atoms, you can use the molar mass of scheelite and the number of oxygen atoms per scheelite molecule. The mass of scheelite that contains a million oxygen atoms is approximately 7.199 kg.
Step-by-step explanation:
To calculate the mass of scheelite that contains a million oxygen atoms, you need to know the molar mass of scheelite and the molar mass of oxygen. Scheelite has the chemical formula CaWO4. The molar mass of CaWO4 is 287.96 g/mol. Each CaWO4 unit contains 4 oxygen atoms, so you can calculate the mass of scheelite that contains a million oxygen atoms as follows:
Mass of scheelite = (1,000,000 atoms of oxygen) x (1 molecule of CaWO4 / 4 atoms of oxygen) x (287.96 g/mol)
Mass of scheelite = 7,199,000 g or 7.199 kg.