C. 95.21g
To calculate the molar mass of MgCl2, we need to add up the atomic masses of magnesium (Mg) and chlorine (Cl).
The molar mass of magnesium (Mg) is 24.31 g/mol and there are two chlorine atoms in magnesium chloride (MgCl2), so we need to multiply the atomic mass of chlorine (35.45 g/mol) by 2.
Mg: 1 x 24.31 = 24.31 g/mol
Cl: 2 x 35.45 = 70.90 g/mol
Adding these together, we get:
24.31 g/mol + 70.90 g/mol = 95.21 g/mol
Therefore, the molar mass of MgCl2 is 95.21 g/mol.
Curious Carl and his lab partner were conducting a variety of experiments to produce gases: hydrogen, oxygen, and carbon dioxide.
In one experiment, they added a piece of magnesium ribbon to 10 milliliters of hydrochloric acid. They observed bubbles being produced and did a variety of tests to identify the escaping gas; it proved to be hydrogen. The reaction is represented by the following equation:
Mg + 2HCl → MgCl2 + H2(g)
What is the molar mass of MgCl2?
A. 35.45g
B. 95.21g
C. 59.76g
D. 24.31g
1 answer