5. A substance, A3B, has the composition by mass of 60% A and 40% B. What is the composition of AB3 by mass? (A) 40% A, 60% B (B) 50% A, 50% B (C) 14% A, 86% B (D) 25% A, 75% B (E) none of these

15. Which of the following statements is true? (A) Tetrahedral molecules (four identical bonds equally spaced) always has a dipole moment. (B) Both HF and CO₂ are linear molecules and therefore polar. (C) The correct order for molecules from most to least polar is CF₂H₂ > CCl₂H₂ > CF₂Cl₂ > CH₄ = CCl₄. (D) The molecular structure of SOCl₂ is trigonal planar. (E) The molecular structure of XeF₅⁺ is trigonal bipyramidal.

5. A substance, A3B, has the composition by mass of 60% A and 40% B. What is the composition of AB3 by mass?
(A) 40% A, 60% B
(B) 50% A, 50% B
(C) 14% A, 86% B
(D) 25% A, 75% B
(E) none of these

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相關試卷

5. A substance, A3B, has the composition by mass of 60% A and 40% B. What is the composition of AB3 by mass?(A) 40% A, 60% B(B) 50% A, 50% B(C) 14% A, 86% B(D) 25% A, 75% B(E) none of these

相關試題

相關試卷

5. A substance, A3B, has the composition by mass of 60% A and 40% B. What is the composition of AB3 by mass?
(A) 40% A, 60% B
(B) 50% A, 50% B
(C) 14% A, 86% B
(D) 25% A, 75% B
(E) none of these