Question

this is a timed test. you will get to use your chemistry ref. tables, a scientific calculator, a pen/pencil, & scratch paper. question 10 1 pts what is the molar mass of mgs? 1. 56.4g/mol 2. 87.0g/mol 3. 28.0g/mol 4. 52.4g/mol

Explanation:

Step1: Find Mg molar mass

The molar mass of Mg (magnesium) from the periodic - table is approximately 24.3 g/mol.

Step2: Find S molar mass

The molar mass of S (sulfur) from the periodic - table is approximately 32.1 g/mol.

Step3: Calculate MgS molar mass

The molar mass of MgS is the sum of the molar masses of Mg and S. So, $M_{MgS}=M_{Mg}+M_{S}=24.3\ g/mol + 32.1\ g/mol=56.4\ g/mol$.

Answer:

1. 56.4g/mol