An element has two isotopes. Isotope #1 has a mass of 159.3 amu and an abundance of 22.0%
Isotope #2 has a mass of 161.2 amu and an abundance of 78.0%.
What is the average atomic mass if this element?

What does earth’s rotation on its axis cause? the tides night and day passing of years phases of the moon

Monkeys and bats have similar bone structure in their forelimbs. however, monkeys have longer forelimbs to use for climbing and swinging in trees. bats have shorter forelimbs to use for flight. which term best describes how monkey and bat forelimbs are related to each other? a. homologous b. embryonic c. analogous d. vestigial

What is the maximum number of electrons that an atomic orbital can contain?