The base-dissociation constant, Kb, for aniline is 4.3 * 10-10. What is the acid-dissociation constant for the conjugate acid of aniline?

2.3 * 10-5 9.5 * 10-4 4.3 * 105 7.5 * 10 - 11

People believed the earth was the center of everything

Which of the following statements is true about energy quantization at the atomic level? Electrons in the outermost orbits are the most stable. Electrons in all the orbits around the nucleus have the same amount of energy.

9. Two twin boys are playing outside on a hot, sunny day. One of the twin boys is wearing a black shirt and the other, a white shirt. The twin in the black shirt feels warmer. Explain why.

A Gran plot for a potentiometric titration resulted in a slope of 5.56 x 105. Measurements were made using SCE as the reference electrode and the analyte Eo was determined to be 0.354 V.

The molecular weight of acetic acid is 60. how much acetic acid would you need to prepare 10 ml of a 0.001 m (1.0 mm) solution?

True of false an unbalanced force cannot change the direction in which an object is moving

What are the primary atoms that make up the scents that we smell?

What happens if sodium sulfide is added to iron (II) sulfide?

What is the lowest energy level that contains d orbitals? O A. 4 O B. 1 O c. 3 O D. 2

What is the nature of the Ca-Cl bond in a molecule of calcium chloride (CaCl2) if the electronegativity value of calcium is 1.0 and that of chlorine is 3.167 O A nonpolar covalent B. moderately polar covalent C.