True or False The geometry and the shapes of the molecules can be explained by using the valence bond theory, but not by the molecular orbital theory.

True or False The valence bond theory can predict the magnetism of the molecules.

Draw the molecular orbital of O2 on a paper, show it in the video, and submit it in the assignment titled below WITHIN 8 MINUTES after submitting the quiz. QCh.9 Picture submission (Located at the bottom of the Week 4 Module)

How might a single base substitution (e.g. AAA to GAA) in the sequence of a gene affect the amino acid sequence of a protein encoded by the gene, and why?

Cytosine (C) makes up 39% of the nucleotides in a sample of DNA from an organism. Approximately what percentage of the nucleotides in this sample will be guanine (G)?

Which of the following molecules use sp3 hybrid orbitals at the central atom? Choose all that apply. Consider the numbers in the formulas to be subscripts.

An object is placed 10 cm from a convex lens of focal length 20 cm. What is the lateral magnification of the object?

The restoring force a bow provides to an arrow as it is pulled back can be modeled as a spring force. The great archer Gila “nocks” an 18-g arrow by pulling it back a distance of 45 cm. Gila fires the arrow horizontally from a small cliff with a height of 20 m, and when the arrow reaches the bottom, it has a speed of 63 m/s. What is the effective spring constant of the bow as Gila nocks the arrow?

A cell phone that is 8.90 cm tall is placed in front of a convex mirror. The image of the phone is 7.80 cm tall and is located 14.8 cm from a mirror. What is the mirror’s focal length?

An object is placed 10 cm from a convex lens of focal length 20 cm. What is the lateral magnification of the object?