Chemistry Class # 9 Ch # 1 Quiz # 2 Welcome to your Chemistry Class # 9 Ch # 1 Quiz # 2 1. Which of the following compounds have the same molecular as well as empirical formula?Acetic acidBenzeneMethaneNone of these 2. Mass number of an atom is denoted by_________ZPQA 3. Chemical formula of Magnesia is______MgOMgSMgMgNa 4. The formula of Calcium oxide is ______CaO3CaOCaSCa2O 5. The symbol of Tungsten element is ___________WSnAgNa 6. Avogadro’s number is numerically equals to ______________6.023 x 10236.073 x 10266.023 x 10286.023 x 1027 7. ___________ are atoms or group of atoms that has a single electron in an outer shell with no charge.Free RadicalsRadicalsMoleculeCompound 8. An atom which have net negative charge is known asAnionCationBoth of themNone of these 9. The particle that carries an electrical charge, positive or negative is known asan ionmoleculecompoundnone of these 10. Molecular ions are also calledRadicalsCompoundsElementsNone of these 11. Which of the following molecule have the same empirical as well as molecular formulaBenzeneGlucoseAcetyleneAmmonia 12. The empirical formula of acetic acid isCH2OH2OCH3COOHFe2O3 13. Molecular formula showsratio of the atoms present in a moleculeActual number of atoms present in a moleculeNone of themAll of them 14. Molecular formula of Benzene isC6H6BHN2OC6H12O6 15. The average atomic mass of chlorine is38.7 a.m.u34.9 a.m.u35.5 a.m.u36.4 a.m.u Time is Up!