select the correct answer. what is the molar mass of alcl₃? a. 62.43 g/mol b. 116.39 g/mol c. 124.86 g/mol…
select the correct answer. what is the molar mass of alcl₃? a. 62.43 g/mol b. 116.39 g/mol c. 124.86 g/mol d. 133.33 g/mol e. 187.29 g/mol
Answer
Explanation:
Step1: Find molar mass of Al
From the periodic - table, the molar mass of Al (aluminum) is approximately $26.98\ g/mol$.
Step2: Find molar mass of Cl
From the periodic - table, the molar mass of Cl (chlorine) is approximately $35.45\ g/mol$.
Step3: Calculate molar mass of $AlCl_3$
The formula for $AlCl_3$ has 1 Al atom and 3 Cl atoms. The molar mass of $AlCl_3$ is $M = 26.98+3\times35.45$. $M = 26.98 + 106.35=133.33\ g/mol$.
Answer:
D. 133.33 g/mol