29. A solution of hydrogen peroxide is 23.6% H2O2 by mass and has a density of 1.11 g/cm3. The molarity of the solution is: (A) 7.23 M (B) 0.262 M (C) 7.70 M (D) 8.03 M (E) none of these

35. The complex ions of Zn2+ are all colorless. The most likely explanation for this is: (A) Zn2+ is paramagnetic. (B) Zn2+ exhibits “d orbital” splittings in its complexes such that they absorb all wavelengths in the visible region. (C) Since Zn2+ is a d10 ion, it does not absorb visible light even though the “d orbital” splittings are correct for absorbing visible wavelengths. (D) Zn2+ is not a transition metal ion. (E) None of these is correct.

29. A solution of hydrogen peroxide is 23.6% H₂O₂ by mass and has a density of 1.11 g/cm³. The molarity of the solution is:
(A) 7.23 M
(B) 0.262 M
(C) 7.70 M
(D) 8.03 M
(E) none of these

相關試題

相關試卷

29. A solution of hydrogen peroxide is 23.6% H2O2 by mass and has a density of 1.11 g/cm3. The molarity of the solution is:(A) 7.23 M(B) 0.262 M(C) 7.70 M(D) 8.03 M(E) none of these

相關試題

相關試卷

29. A solution of hydrogen peroxide is 23.6% H₂O₂ by mass and has a density of 1.11 g/cm³. The molarity of the solution is:
(A) 7.23 M
(B) 0.262 M
(C) 7.70 M
(D) 8.03 M
(E) none of these