Multiple Choice
The element X has three naturally occurring isotopes. The masses (amu) and % abundances of the isotopes are given in the table below. The average atomic mass of the element is __________ amu. 
A) 17.20
B) 16.90
C) 17.65
D) 17.11
Correct Answer:
Verified
Correct Answer:
Verified
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Q44: What is the molecular formula for heptane?<br>A)C<sub>6</sub>H<sub>12</sub><br>B)C<sub>6</sub>H<sub>1</sub><sub>4</sub><br>C)C<sub>7</sub>H<sub>1</sub><sub>4</sub><br>D)C<sub>7</sub>H<sub>1</sub><sub>6</sub><br>E)C<sub>7</sub>H<sub>1</sub><sub>8</sub>
Q46: The element X has two naturally occurring
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Q90: In the absence of magnetic or electric
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Q135: Methane and ethane are both made up
Q236: Which statement below correctly describes the responses
Q238: The correct name for K<sub>2</sub>S is _.<br>A)potassium