Multiple Choice
An element found in another galaxy exists as two isotopes. If 80.0 percent of the atoms have an atomic mass of 80.00 amu and the other 20.0 percent have an atomic mass of 82.00 amu, what is the atomic mass of the element?
A) 81.0 amu
B) 64.0 amu
C) 80.4 amu
D) 16.4 amu
E) 81.6 amu
Correct Answer:
Verified
Correct Answer:
Verified
Q15: The nucleus of an electrically neutral iron
Q16: What does the following element description actually
Q34: Which of the following statements describes an
Q59: How does Rutherford's model of the atom
Q60: Why did Rutherford propose a model for
Q61: Which of the following statements is false?<br>A)The
Q62: Boron has primarily two isotopes, one with
Q65: What color do you see when you
Q68: Each atomic orbital can hold _.<br>A)1 electron<br>B)up
Q72: Which has more atoms: a 1-gram sample