Question

66 Laboratory Manual for General, Organic, and Biological Chemistry Questions and Problems 01 Using the rules for writing the formulas of ionic compounds, write the ions and the correct formula for magnesium oxide. Ma 2 + + 0 2 = MgO Q2 Write a balanced equation for the reaction of the magnesium and the oxygen (02), including their physical states. Q3 Calculate the simplest formula for each of the following compounds: a. 0.200 mole of Al and 0.600 mole of CI b.0.080 mole of Ba, 0.080 mole of S, 0.320 mole of Q4 When 2.50 g of copper reacts with oxygen, the copper oxide compound has a mass of 2.81 g. What is the simplest formula of the copper oxide? B. Formula of a Hydrate 1. Mass of crucible 2. Mass of crucible and hydrate 3. Mass of crucible and anhydrate 3a. Mass of crucible and anhydrate (second heating) Calculations 4. Mass of hydrate 5. Mass of anhydrate 6. Massa

Answer 1

T 0.1 In hierdiep Mght + 0² = ego to the to areole who 8.2. 2 mg (s) + O2(8) = 2ngo (s) A m ppen to and ob mold. R 0.2 mol of AI so the no of u atom, is 0.63 TL 0:2 so the no of A atom 0.2 2 0.2 1 to All Ons 9 no of Ba atom s atom a no of 0.080. 0.080 21 no no of o atoma 8.320 = 4 0.080 Basoy

Atomic weight of cua 63.546 gnol Mole of cu = 25/63.596 2 0.029 mos. Man of oxygen a 2.81 -2.50 propre = 0.319 mole of oxygen a 8.31 = 0.019 mol. .. Ĉ 0:313 0.039 ooola 0.019 No of atom of lu 2 0 2 2.0 No of atom of o=0.0.1 g laget So, emperical formula cuo