Which is the conjugate base in the following reaction? (Please ignore the Li + atoms on both sides of the reaction)    a. I b. II c. III d. IV e. Both I & III

A young male jumped from a tree and landed feet first. Which aspect of his body has sustained the initial injury?

Which of the following compounds is most acidic?    a. I b. II c. III d. IV e. I & IV

The left side of the heart receives oxygenated blood from the lungs through the:

Which of the following compounds contain an aromatic ring?    a. I b. II c. III d. IV e. Both III & IV

Mental function often begins to decline within ___ year(s) before death.

What is the correct Lewis dot structure for C?     a. I b. II c. III d. IV e. V

Extra Credit Suppose a park ranger wishes to collect some data from the State Park she works in to asses if the proportion of trees in the park that are in need of pruning is significantly higher than 5%. She will test the hypotheses : 

Suppose 95% C.I for the passengers boarding flight, to get  affected by Covid-19 out of every 100 passengers is 3.8 < p < 12.35.    At CVG the airport authorities wanted to check if a particular flight has less than 2-3 affected passenger out of a 100. What would their decision be based on the information provided above?   [Decision] the [type] hypothesis which is [Hypothesis]

95% C.I. for population standard deviation is 0.98 <