How many moles are in 50 grams of AlCl2

Missed a class and a bit confused....please explain your answer. I am TERRIBLE at chem....

You know, I sort of think the chemical is AlCl3. I'll figure it out for both.

AlCl2
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Al = 27 from the periodic table
Cl2 = 2 * 35.5 = 71
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Total = 27 + 71 = 98

n = given mass / molar mass
n = ??
given mass = 50 grams.
Molar Mass = 98

n = 50 / 98 = 0.510

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AlCl3
Al = 27
Cl3 = 3* 35.5 = 106.5

Molar Mass = 106.5 + 27 = 133.5

moles = ??
given mass = 50 grams
Molar Mass = 133.5

n = 50 / 133.5
n = 0.375