Question

what is the molar mass of babr₂?
1 mol ba = 137.33 g ba
1 mol br = 79.90 g br
1 mol babr₂ = ? g babr₂
round your answer to two decimal places.

Explanation:

Step1: Find mass of Ba in BaBr₂

The formula has 1 Ba atom. Given \(1\) mol Ba = \(137.33\) g Ba.

Step2: Find mass of Br in BaBr₂

The formula has 2 Br atoms. Since \(1\) mol Br = \(79.90\) g Br, for 2 Br atoms: \(2\times79.90=159.80\) g Br.

Step3: Calculate molar mass of BaBr₂

Molar mass of \(BaBr_2=\) mass of Ba + mass of Br. So, \(137.33 + 159.80=297.13\) g/mol.

Answer:

\(297.13\)