With either spelling of the word, hyphens are largely redundant now for words such as these (except where there is a specific style required). Re-energize/reenergize is the American spelling but re-energise/reenergise is used for the British spelling.
reestablish
If you mean the 'bat' used to play tennis - the correct spelling is raquet
That is the correct spelling of "preventative" (used to deter or avoid).
You had the correct spelling in your question ("questioning").
The correct spelling is "refocused." In this case, the prefix "re-" is attached directly to the root word "focused" without a hyphen. The form "re-focused" is less common and typically used in specific contexts to emphasize the action of focusing again, but "refocused" is the standard and widely accepted spelling.
re-energize
There are two P's in the correct spelling "flipping".
reestablish
That is the correct spelling of "tomato."
The spelling raccoon is correct and normally used. The spelling racoon is a rare variant.
The one you used is correct.
No, humongus is not the correct spelling. The correct spelling is humongous.
If you mean the 'bat' used to play tennis - the correct spelling is raquet
The correct spelling is exhausted (worn out, or used up).
That is the correct spelling of "preventative" (used to deter or avoid).
The correct spelling is "polystyrene." It is a synthetic polymer commonly used in the production of various plastic products.
sphygmomanometer