Question

1. what is the molar mass of kbr?

54.0 g/mol
74.1 g/mol
119 g/mol
1.20 × 10²⁴ g/mol
clear all

Explanation:

Step1: Recall molar mass calculation

Molar mass of a compound is the sum of molar masses of its constituent atoms. For KBr, it has K (potassium) and Br (bromine).

Step2: Find atomic masses

Molar mass of K is approximately 39.10 g/mol, molar mass of Br is approximately 79.90 g/mol.

Step3: Calculate molar mass of KBr

Sum the atomic masses: \( 39.10 + 79.90 = 119 \) g/mol (approximate, considering significant figures or standard values).

Answer:

119 g/mol (the option with "119 g/mol")