For one of the ions shown above, write out all of the possible resonance structures. Work out the problem on a separate piece of paper and upload a photo of your response at the end of the test. Please mark the problem clearly and show your work.

Using the electronegativity table and the rules (which suggest that a difference in electronegativity below 0.4 is equally shared, 0.5–1.7 is polar covalent, and greater than 1.8 is ionic), the bonds in BeBr2 (electronegativity of Be is 1.5 and Br is 2.8) would be classified as ________.

Double Bonds A double bond between two carbon atoms consists of one sigma-type bond and one pi-type bond. Draw a diagram of the double bond orbitals. Briefly describe how a pi bond differs from a sigma bond. Enter the text of your answer in the box below. A diagram with a brief description can be recorded on a separate piece of paper, labeled and numbered clearly, and uploaded as a photo at the end of the exam.

At the end of “Barn Burning,”

Which of the following is not something that Dee is allowed to carry home with her

An unreliable narrator is

Assuming that the molecules carbon monoxide (CO) and nitrogen (N2) have similar electron clouds, which statement below is TRUE?

A researcher analyzes a rock sample and determines that 87.5% of a parent isotope has decayed into a daughter isotope. Given that the half life of that particular parent isotope is 500,000 years, how old is the sample? 

Which substance would be expected to have the highest boiling point?

Which is the limiting reactant in the following reaction given that you start with of Na2S and CuSO4?Reaction: Na2S + CuSO4 → Na2SO4 + CuS