Multiple Choice
Copper has an atomic weight of 63.55 u.If 69.17% of copper exists as 63Cu (62.93960 u) ,what is the identity and the atomic mass of the other isotope?
A) Cu-64; 63.82 u
B) Cu-64; 64.16 u
C) Cu-65; 64.16 u
D) Cu-65; 64.92 u
E) Cu-66; 65.91 u
Correct Answer:

Verified
Correct Answer:
Verified
Q38: What is the molecular mass of cyclononane,C<sub>9</sub>H<sub>18</sub>?<br>A)
Q39: Lithium has two naturally occurring isotopes,<sup>6</sup>Li and
Q40: Which of the following elements does 'X'
Q41: What charge is likely possible on a
Q42: Which of the following elements belongs to
Q44: An element consists of three isotopes.The abundance
Q45: Which of the following is the correct
Q46: For a nonmetal in Group 6A of
Q47: The molar mass of platinum is 195.08
Q48: Which of the following elements is present