The first law of thermodynamics is basically a special version of the law of ______________
Fill in the blank(s) with correct word
conservation of energy
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Which of the SI prefixes is used to indicate 
A. kilo B. mega C. giga D. tera E. nano
Suppose we imagine the Sun to be about the size of a grapefruit. Which of the following best describes the size and distance of Earth on the same scale?
A) Earth is the size of a tip of a ballpoint pen about 1 meter from the Sun. B) Earth is the size of a golf ball about 1 meter from the Sun. C) Earth is the size of a tip of a ballpoint pen about 15 meters from the Sun. D) Earth is the size of a golf ball about 15 meters from the Sun. E) Earth is the size of a marble about 25 miles from the Sun.
An ice cube in a glass of water is pushed to the bottom of the glass and held there with a straw. Consequently, the buoyant force on the ice cube is now
A. the same as when the cube was floating at the top. B. exactly balanced by the force exerted only by the straw. C. exactly balanced by the weight of the ice cube. D. greater than when the cube was floating at the top.
What would the concentration of OH- be if the concentration of H3O+ was 1 × 10-5M?
[H3O+] × [OH-] = Kw = 1 × 10-14 A) 1 × 10-14 B) 1 × 10-5 C) 1 × 109 D) 1 × 105 E) 1 × 10-9