The cooling or warming of air that occurs because air is allowed to expand or is compressed, not because it is added or subtracted is called ________.
Fill in the blank(s) with the appropriate word(s).
Ans: adiabatic temperature changes
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When a hydronium ion concentration equals 1 × 10-4 moles per liter, what is the pH of the solution? Is the solution acidic or basic?
A. The pH is of this solution is 6 and it is acidic. B. The pH is of this solution is 8 and it is basic. C. The pH is of this solution is 10 and it is basic. D. The pH is of this solution is 4 and it is acidic.
Falling raindrops are tear-shaped because that is the profile that minimizes air resistance
Indicate whether the statement is true or false
Sickle cell anemia is the result of how many changes in each b-chain of normal hemoglobin?
A) 1 B) 2 C) 3 D) 4
Which of the following caused devastating effects on the marine food chain and was banned in the United States in 1972?
A) DDT B) Methyl mercury C) PCBs D) Polycyclic aromatic hydrocarbons E) Sewage sludge