General Chemistry I — 2016 Past Questions

University of Ilorin CHM101: 2 questions.

Topics: Periodicity and building up of the periodic table, Chemical equations and stoichiometry

1. What is the empirical formula of cupric oxalate, if the compound contains 41.93% Cu, 15.85% C and 42.22% O by mass? (Cu = 63.55, C = 12.0, O = 16.0)
   1. CuC₃O₄
   2. Cu(C₂O₄)₂
   3. CuC₂O₄
   4. Cu₂(C₂O₄)₃
2. All the properties are variable across the period and down the group except:
   1. latent heat of fusion
   2. boiling point
   3. charges in the nucleus
   4. number of shells

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