Multiple Choice
Zinc has five naturally occurring isotopes, Zn-64, Zn-66, Zn-67, Zn-68 and Zn-70. Calculate the atomic mass of zinc given the following abundances and atomic masses for the isotopes: Zn-64 63.9291 amu 48.61%
Zn-66 65.9260 amu 27.9%
Zn-67 66.9271 amu 4.1%
Zn-68 67.9248 amu 18.75%
Zn-70 69.9253 amu 0.62%
A) 65.34 amu
B) 65.38 amu
C) 65.65 amu
D) 65.19 amu
E) 65.85 amu
Correct Answer:
Verified
Correct Answer:
Verified
Q48: Predict the charge of the most stable
Q56: Identify the symbol for silver.<br>A) S<br>B) Si<br>C)
Q79: What is the atomic number for tin?<br>A)
Q89: If 6.0 g of carbon combines with
Q113: How many protons does the Br<sup>-</sup> ion
Q114: The mass number of an atom of
Q116: Identify the chemical symbol of element Q
Q118: Match the following.<br><br>-magnesium<br>A)Si<br>B)Fe<br>C)Mg<br>D)C<br>E)K
Q123: An atom of 131<sub>Xe</sub> contains _ electrons.<br>A)131<br>B)185<br>C)77<br>D)123<br>E)54
Q170: What is the chemical symbol for titanium?<br>A)Th<br>B)Ti<br>C)Tl<br>D)Tm