Which of the following contains the greatest mass of bromine atoms? A)15.0 g of KBr B)29.0 g of Br₂ C)0.096 mol of KBr D)0.078 mol of Br₂ E)25.0 g of NaBrO₃

Question

Quizplus · Accepted Answer

To determine which compound contains the greatest mass of bromine atoms, we need to calculate the mass of each compound that is due to bromine. A) KBr has a molar mass of 119 g/mol, and 1 mole of KBr contains 1 mole of bromine. Therefore, 15.0 g of KBr contains 15.0/119 mol of bromine, which is equal to 0.126 mol. B) Br₂ has a molar mass of 799 g/mol, and it contains 12 bromine atoms. Therefore, the mass due to bromine in Br₂ is (12 x 80 g/mol) = 960 g. C) 0.096 mol of KBr contains 0.096 mol of bromine, which is equal to (0.096 x 80 g) = 7.7 g. D) TBr₂ has a molar mass of 799 g/mol, and it contains 12 bromine atoms. Therefore, the mass due to bromine in Br₂ is (12 x 80 g/mol) = 960 g. E) NaBrO₃ has a molar mass of 150 g/mol, and it contains 1 bromine atom. Therefore, the mass due to bromine in NaBrO₃ is (1 x 80 g/mol) = 80 g. Therefore, the compound that contains the greatest mass of bromine atoms is Br₂, so the answer is B.

Which of the Following Contains the Greatest Mass of Bromine