For this problem, we’re being asked to determine the molar mass of MgCl2
Use the periodic table to figure out the atomic masses of Mg and Cl. As we can see, in 1 molecule of MgCl2, we have 1 Mg atom and 2 Cl atoms
What is the molar mass of MgCl 2?
A. 127.21 g mol–1 B. 75.76 g mol–1 C. 59.76 g mol–1
D. 84.07 g mol–1 E. 95.21 g mol–1
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