Which shower would most likely be the control group in this study?
the shower sprayed with many test sprays
o the shower not exposed to any mildew at all
the shower not sprayed with any mildew-preventing
spray
the shower sprayed with a test spray that is already
known to work

hi,

the answer is d, it has indefinite shape but definite volume.

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the dissolution of polymer can be thermodynamically described in 2 steps.

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.

answerspecific gravity;