What is the name given to the electrons in the highest occupied energy level of an atom?

A. valence electrons

B. orbital electrons

C. cations

D. anions

Preteins vary widely in structure, whereas nucleic acids have rather uniform structures. How do you account for this major difference?

Why is it important to protect the ozone layer

Match the appropriate name for each chemical reaction description provided. A + B - - > AB ABC - - > AB + C XY + Z - - > Y + XZ CH4 + 2O2 - - > 2H2O + CO2 HNO3 (aq) + LiOH (aq) - - > H2O (l) + LiNO3 (aq) 2KI (aq) + Pb (NO3) 2 (aq) - - > 2KNO3 (aq) +

Which process was responsible for the removal of the soil? 1 deposition 2 erosion 3 faulting 4 tilting

The voltage generated by the zinc concentration cell described by, zn (s) |zn2 (aq, 0.100 m) ||zn2 (aq,? m) |zn (s), is 16.0 mv at 25 °c. calculate the concentration of the zn2 (aq) ion at the cathode.

What mechanical waves needs a medium to travel through? A. all mechanical waves need a medium to travel through B. surface waves only C. transverse and longitudinal waves only D. longitudinal and surface waves only

Which of the following statements correctly describes how Moseley's research affected the development of the periodic table? Moseley's research led to the reorganization of the elements based on their atomic mass instead of their physical appearance.

A minerals luster is produced by its ability to transmit light. Opaque minerals always have a metallic luster because they do not transmit any light. True False

The elements selenium and oxygen are both poor electrical conductors in which section of the periodic table are they found

What is the mole ratio of NaOH to Al (OH) 3