Chapter 3 - Equations, the Mole, and Chemical Formulas - Questions and Exercises - Exercises - Page 132: 3.40

$UO_{2}(s) + 2 CCl_{4}(g) → UCl_{4}(s) + 2 COCl_{2}(g)$

Uranium dioxide reacts with carbon tetrachloride at a high temperature to form Uranium tetrachloride and phosgene gas. Note that the same number of each of the elements must exist on the products and reactants side for each balanced reaction.