using the periodic table, find the molar mass of phosphorus trichloride (pcl₃). write your answer to the…

using the periodic table, find the molar mass of phosphorus trichloride (pcl₃). write your answer to the hundredths place. round if necessary. g/mol

using the periodic table, find the molar mass of phosphorus trichloride (pcl₃). write your answer to the hundredths place. round if necessary. g/mol

Answer

Explanation:

Step1: Determine atomic masses

From the periodic - table, the atomic mass of P (phosphorus) is approximately 30.97 g/mol, and the atomic mass of Cl (chlorine) is approximately 35.45 g/mol.

Step2: Calculate molar mass of PCl₃

The formula for the molar mass of PCl₃ is (M = M_{P}+3\times M_{Cl}). Substitute the atomic masses: (M = 30.97+3\times35.45). First, calculate (3\times35.45 = 106.35). Then, (M = 30.97 + 106.35=137.32) g/mol.

Answer:

137.32 g/mol