Question 14 (4 points) (04.04 MC)

Which of the following describes the interrelated nature between photosynthesis and cellular respiration? (4 points)

A)They together help to lower the percentage of carbon dioxide in nature.

B)They both help increase the fossil fuel availability for humans.

C)They together help recycle important elements in nature.

D)They both help lower our carbon footprint.

The ozone molecule o3 has a permanent dipole moment of 1.8×10−30 cm. although the molecule is very slightly bent-which is why it has a dipole moment-it can be modeled as a uniform rod of length 2.5×10−10 m with the dipole moment perpendicular to the axis of the rod. suppose an ozone molecule is in a 8000 n/c uniform electric field. in equilibrium, the dipole moment is aligned with the electric field. but if the molecule is rotated by a small angle and released, it will oscillate back and forth in simple harmonic motion. what is the frequency f of oscillation?

Pegmatites are igneous rocks in which the individual minerals are very large. typically, the minerals are all light-colored quartz, feldspar and muscovite. if you were given a black and white photograph of a pegmatite in a quarry (where the rock has been blasted and broken), what physical properties could you use to identify those three minerals in this hypothetical photo? describe each mineral and the specific diagnostic properties. be specific.

What information does a complete ionic equation give that the balanced equation doesn’t show?