Answer:
C. 114.8 u
Explanation:
The atomic mass of X is the <em>weighted average</em> of the atomic masses of its isotopes.
We multiply the atomic mass of each isotope by a number representing its relative importance (i.e., its percent of the total).
Set up a table for easy calculation
0.0429 × 112.90 u = 4.843 u
0.9571 × 114.90 u = <u>109.97 u
</u>
TOTAL = 114.8 u
An aquifer is D. an underground geological formation that contains a large amount of water.
C. Outward pressure caused by heat
The formula of work is Work (Joules)=Force (Newtons) · distance in the direction of the force (meters), therefore its just a matter of replacing factors.
Work done = 12 · 4.5= 54 joules
The answer is e.trends in melting points. The conductivity, shininess, malleability and ductility are associated to the electron-sea model. The characteristics of metallic bonds basically describe many of the physical properties of metals by using the formation of the so called sea of electrons that are free to move around.
