How many different types of resonance structures can be drawn for the ion SO32- where all atoms satisfy the octet rule?
A) 1
B) 2
C) 3
D) 4
E) 5
Question 2
The pH of an aqueous solution at 25.0 C is 10.55. What is the molarity of H+ in this solution?
A) 2.8 10-11
B) 3.5 10-4
C) 3.45
D) 1.1 10-13
E) 3.5 1010
Question 3
Electromagnetic radiation with a wavelength of 640 nm appears as orange light to the human eye. The frequency of this light is ________ s-1.
A) 4.688 1014
B) 4.688 105
C) 1.920 102
D) 1.920 1011
E) 2.133 10-15
The major types of plant nutrients and their sources.
A variety of types of scissors.
Summary of major brain structures.
RNA polymerase subunit structures in the three domains of life
Types of Shock
In the retina, there are two types of light receptor cells: Rods are sensitive to differences in lig