A metal forms the fluoride MF3. Electrolysis of the molten fluoride by a current of 3.86 A for 16.2 minutes deposits 1.25 g of the metal. Calculate the molar mass of the metal.
Continued Chapter 2 Empirical and Molecular Formula Molecular formula- chemical formula of a substance (ex. C6H12O6) Empirical- simplest whole number (ex. CH2O) Types of Compounds Ionic Compound: - Cation and Anion - Metal and Nonmetal Molecular or Covalent Compound: - Nonmetal and Nonmetal - Ends in H Acid Compounds: - Chemical formula starts with H - Ex. of strong acids- HCl, HBr, HNo3, H2SO4, HI, HClO4 Base/Basic Compounds: - Metal and Hydroxide - (OH) is an alcohol when attached to a nonmetal Naming Ionic- known cation charge, unknown cation charge (transition metals) known cation charge- element name + ion; anion- element name + -ide ending unknown cation- element + ion (roman numeral); anion- element name + -ide ending Molecular- metal and nonmetals since there aren’t any ions, you need to designate the # of elements mono, di, tri, tetra, penta, hexa, hepta, octa, nona, deca 1 element- name of element, if only 1 no mono prefix is required 2 ndelement- name of element with –ide ending, must designate how many even if 1 Acidic Compound- recognize acids by chemical formula starting with H two types: with and without oxygen WITHOUT- start name with hydro- anion name and ending with –ic WITH- determine polyatomic ion -if ending is –ate change to –ic ending then add acid -if ending is –ite change to –ous ending then add acid Atomic Mass