Compare and contrast gem-quality amethyst with regular quartz-- plz help me i am soo confused
Quartz has molecular mass of 60.09 g/mol. 1.80 g quartz multiplied by 1 mol quarts/60.09g gives .0300 mol quartz. In each mole of quartz, there are two moles of oxygen (from sio-2-). That gives .0600 mol oxygen. There are approx. 6.02x10^23 atoms in a mole. .0600 mol oxygen times 6.02x10^23 atoms/mol gives 3.61x10^22 atoms of oxygen.
