Chemistry Formative 0.0 / 5 ? ChemistryFormative Exam QuestionsUniversityNone Created by: MZia17Created on: 12-11-18 13:34 A substance with a fixed composition that is chemically decomposable is called a/an: Compound 1 of 9 How many neutrons are present in Li? 4 2 of 9 What is the formula of the compound phosphorus forms with hydrogen? PH3 3 of 9 What is the mass percentage of magnesium in MgCl2? 25% 4 of 9 What is the concentration in mM of chloride ions in an infusion containing 1.8 g of calcium chloride per litre? 32.4 5 of 9 How many orbitals with l = 2 can exist in a shell? 5 6 of 9 The atomic masses of 2 members of a triad are 28 and 119. What is the identity of the third member? Germanium 7 of 9 The first four successive ionisation energies of an atom are 577kJ/mol, 1820 kJ/mol, 2740 kJ/mol, 11600 kJ/mol. What group is it in? IIIA 8 of 9 The bonding in BaCl2 is best described as: Pure Ionic 9 of 9
Comments
No comments have yet been made