7.0 g B reacts with excess Cl2 by the reaction 2B + 3Cl2 –>…

7.0 g B reacts with excess Cl2 by the reaction 2B + 3Cl2 –> B2Cl6. What is the theoretical yield?  Answer in g B2Cl6. Do not type units. Do not use scientific notation. The answer to this question is required to do the next question on percent yield.