The average atomic mass recorded on the periodic table for cobalt is 58.933 u. this indicates that the most abundant isotope of cobalt is
a.) cobalt-57
b.) cobalt-58
c.) cobalt-59
d.) cobalt-60

Use examples from the article to explain one positive and one negative effect that chemistry has had on society

How many electrons does silver have to give up in order to achieve a sido noble gas electron configuration

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.