5. (1 point) in which of the following compounds does rotation occur around all covalent bonds between carbons?

pentene
pentane right answer
octyne
octene

7. (1 point) which of the following compounds is a structural isomer of pentane?

2, 2-dimethylbutane
2-methylbutane right answer
2-dimethylpentane
octane

12. (1 point) which formula would go with the picture to represent the same compound? * picture goes with this

ch₃(ch₂)₂chooh
ch₃(ch₂)₂coch₂oh
ch₃(ch₂)₃cooh
ch₃(ch₂)₂cooh

18. (1 point) a saturated fat is saturated with

oxygens
water
hydrogens right answer
double bonds

21. (3 points) what are some of the by-products of burning coal? why does coal leave more soot upon burning than the other more aliphatic fuels obtained from petroleum?

22. (3 points) identify the compound above and classify its functional group:

23. (3 points) why do alcohols and carboxylic acids have a higher boiling point than hydrocarbons and halocarbons?

98 points you will be galileo perform the experiment to determine if objects with different mass fall at the same, or different, rates in the air and in a vacuum. before you conduct your experiment, you need to form a hypothesis. a hypothesis is a prediction of what you think will happen in the experiment. the hypothesis is a statement that describes “if” a certain set of circumstances are present “then” there will be a specific result that will occur. record your hypothesis here: record the results from step one of the experiment (dropping the objects in the air): first trial: second trial: third trial: record the results from step two of the experiment (dropping the objects in a vacuum): first trial: second trial: third trial: did the experiment support your hypothesis? using the data from your experiment, describe why you believe your hypothesis was either proven or disproven. what forces were acting on the objects dropped in the air? what force was acting on the objects dropped in the vacuum? part two: comparing forces choose two forces and compare and contrast these forces. you must provide two ways that they are alike and two ways that they are different. you may make a list, write in paragraph form, or make a chart. choose two forces and compare and contrast these forces. these must be different forces than used in the prior question. provide two ways that they are similar and two ways that they are different. you may make a list, write it out, or make a chart.