Anew synthetic element has two isotopes. if the first isotope has a mass of 259.98 amu and a percent abundance of 43%, what is the percent abundance of the second isotope?

Iwll give extra points to who gets this for ! what type of reaction is this? ?

Which statement is usually true about the relationship between activation energy and reaction rates? low activation energy barriers result in low rates. high activation energy barriers result in low rates. low activation energy barriers result in no reaction. high activation energy barriers result in no reaction.

Which of the following represents the ester functional group? a. -coo- b. -cho c. -cooh d. c=o