What is the mass of 4.32 mol gai3? 455 g 1,230 g 1,720 g 1,950 g

Answer is: the mass of gallium iodide (GaI₃) is 1,950g.

n(GaI₃) = 4.32 mol; amount of the galium iodide.

M(GaI₃) = Ar(Ga) + 3 · Ar(I) · g/mol.

M(GaI₃) = 69.72 + 3 · 126.9 · g/mol.

M(GaI₃) = 69.72 + 380.7 · g/mol.

M(GaI₃) = 450.42 g/mol; molar mass of gallium iodide.

m(GaI₃) = n(GaI₃) · M(GaI₃).

m(GaI₃) = 4.32 mol · 450.42 g/mol.

m(GaI₃) = 1946 g; mass of gallium iodide.

What is the mass of 4.32 mol GaI3?

455 g

1,230 g

1,720 g

1,950 g CORRECT ANSWER

I took the test and D) was correct

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