An Element Has Three Stable Isotopes with Masses of 27

question 92

Multiple Choice

An element has three stable isotopes with masses of 27.977 amu,28.976 amu,and 29.973 amu.The heavier two isotopes have an abundance of 4.68% and 3.09%,respectively.What is the mass of the element?

• A) 27.684 amu
• B) 29.251 amu
• C) 28.085 amu
• D) 30.107 amu
• E) 28.991 amu

---

Definitions:

Fetal Activity

Movements or actions performed by a fetus within the womb, which can include kicking, turning, and other motions.

Limbs

The appendages of the body, such as arms and legs, that extend from the central part of the organism.

Normal Development

The typical progression through different stages of physical, cognitive, emotional, and social growth expected at certain ages.

Blood

A vital fluid in humans and animals that delivers necessary nutrients and oxygen to the cells and carries away waste products.