The molar mass of a compound AL₂(XO₄)₃ is 342. The atomic mass of X is ________, which is ________.

Question

Quizplus · Accepted Answer

To find the atomic mass of X, we need to first calculate the molar mass of AL₂(XO₄)₃. Molar mass of Al₂(XO₄)₃ = (2 x atomic mass of Al) + (1 x atomic mass of X) + (4 x atomic mass of O) + (1 x atomic mass of S) + (13 x atomic mass of B) We know that the molar mass of the compound is 342. Therefore, 342 = (2 x 27) + (1 x atomic mass of X) + (4 x 16) + 32 + (13 x 10) Simplifying the equation, we get 342 = 54 + atomic mass of X + 64 + 130 342 = 248 + atomic mass of X Atomic mass of X = 342 - 248 = 94 Looking at the periodic table, we see that the closest element with an atomic mass of 32 is Sulfur (S). Therefore, the answer is B - 32; S.

The Molar Mass of a Compound AL₂(XO₄)3 Is 342

The Molar Mass of a Compound AL₂(XO₄)₃ Is 342