Two naturally occurring isotopes of aluminum exist, Al-26 and Al-27. Aluminum's atomic mass is -26.98 u. What can you conclude about the relative abundance of each isotope?

Which of the following might a chemist choose to study? a. glacier movement in alaska b. better ways to recycle plastics c. the effects of hurricanes on turtle populations d. the vibrations in bridges caused by big trucks

How much energy moves onto the next level, in an energy pyramid

What’s the percent by mass of carbon in c10h14n2