Chapter 2 Question: How did the rust form? Claim 1: The iron pipes changed into rust.
Claim 2: The fertilizer changed into rust.
Claim 3: The iron pipes and the fertilizer changed into rust.
Explain to the people of Westfield how the rust in their water formed

Describe in detail the melting point behavior of the 80: 20 benzoic acid-mandelic acid mixture

Asample of silver (with work function ? = 4.52 ev) is exposed to an ultraviolet light source (? = 200 nm), which results in the ejection of photoelectrons. what changes will be observed if: silver is replaced with copper (? = 5.10 ev) more photoelectrons ejected no photoelectrons are emitted fewer photoelectrons ejected more energetic photoelectrons (on average) less energetic photoelectrons (on average)

Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.