The molecular formula of calcium oxide - CaO The molar mass of CaO - 40 + 16 = 56 g/mol Which means that 1 mol weighs 56 g Therefore 56 g of CaO is - 1 mol Then 89.23 g is equivalent to - 1/56 x 89.23 = 1.6 mol of CaO
Non-metals are elements that react by gaining electrons to attain a stable configuration and form an anion.
Non-metal elements are found in groups, 5, 6, 7 and 8 of the periodic table. Halogens are an example of non-metals that gain an electron to form anions.
SO₂ is a compound whose molecule contains sulfur and oxygen which are non-metals. The sulfur and oxygen atoms are joined together by a covalent bond to form SO₂.