Problem: The element X occurs naturally to the extent of 20.0% 12X and 80.0% 13X. The atomic mass of X is nearest (A) 12.2 (B) 12.5 (C) 12.8 (D) 13.0

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The element X occurs naturally to the extent of 20.0% 12X and 80.0% 13X. The atomic mass of X is nearest

(A) 12.2

(B) 12.5

(C) 12.8

(D) 13.0

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Based on our data, we think this problem is relevant for Professor Stroeva's class at GSU.