Element Z shows three distinct peaks in its mass spectrum at ,
CHEMISTRY · Multi-part · AP · Chemistry · Atomic Structure and Properties · Atomic Structure and Properties
Problem
Element Z shows three distinct peaks in its mass spectrum at m/z=62, m/z=64, and m/z=65. The raw peak heights (in arbitrary units of detector response) are 60.0, 25.0, and 15.0, respectively. No other peaks attributable to element Z are detected.
Use the information provided to answer the questions below. Assume each detected ion carries a single positive charge.
(a) Convert the raw peak heights into percentage abundances for the three isotopes. Present your results to two significant figures.
(b) Using the percentage abundances from part (a), determine the average atomic mass of element Z. Report your answer in amu with the appropriate number of significant figures.