Question

directions: solve each of the following problems 7 - 12 as directed. show all your work (using dimensional analysis on #s 9 - bold and underline your final answer. 7.) find the molar mass of bacl₂. (3 points)

Explanation:

Step1: Identify atomic masses

The atomic mass of Ba (barium) is approximately 137.33 g/mol, and the atomic mass of Cl (chlorine) is approximately 35.45 g/mol.

Step2: Calculate molar mass of BaCl₂

The molar - mass formula for BaCl₂ is \(M = M_{Ba}+2\times M_{Cl}\). Substitute the atomic masses: \(M=137.33\ g/mol + 2\times35.45\ g/mol\).
First, calculate \(2\times35.45 = 70.9\ g/mol\). Then, \(M = 137.33\ g/mol+70.9\ g/mol=208.23\ g/mol\).

Answer:

\(\mathbf{208.23\ g/mol}\)