You've got the power

We've described a number and written it in scientific notation with the power of 10 missing. You fill in the power. A quick refresher: 10 to the zero power is 1, 10 to the 1st power is 10, 10 to the 2nd power is 100, and so on; 10 to the -1 power is 0.1, 10 to the -2 power is 0.01, and so on. Remember, we are looking for the power, not the number referred to in the clue, so your answer will be an integer.

(2/-1) If The Barenaked Ladies had this many dollars, they would buy an exotic pet, John Merrickā€™s remains, and some art ("a Picasso or a Garfunkel"): 10 to this power.2213
(4/-2) Dr. Seuss character Bartholomew Cubbins wears this many hats: 5 x 10 to this power.2213
(6/-3) In finance lexicon, a "unicorn" is a start-up company with a value of at least this many dollars: 10 to this power.1655
(8/-4) A "fifth" of whiskey is this many liters: 7.5 x 10 to this power2231
(10/-5) Challenger Deep, the lowest point of the Mariana Trench, is this many fathoms below the surface: 6 x 10 to this power.1628

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