Most polymers that are solid at room temperature do not mix with other polymers even when melted, because of the very high ___________of mixing.
Fill in the blank(s) with the appropriate word(s).
entropy
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A hot air balloon has a volume of 2.00 × 103 m3 when fully inflated, and the air inside the balloon is always at atmospheric pressure of 1.01 × 105 Pa because of the large opening used to fill the balloon and heat the air inside it
What is the mass of hot air inside the balloon if its temperature is 120°C? The universal gas constant is 8.314 J/mol ? K. (Assume a molecular weight of 28.8 g/mol for air.) A) 1780 kg B) 5850 kg C) 203 kg D) 62.0 kg
How many tidal bulges "move" around Earth daily?
a. Two b. Six c. One d. Four
The Lewis symbol 
would be characteristic of which group?
a.
6A
b.
8A
c.
3A
d.
7A
An electron and a proton are separated by a distance of 1 m. What happens to the size of the force on the proton if the electron is moved 0.5 m closer to the proton?
A) It increases to 4 times its original value. B) It decreases to one-half its original value. C) It increases to 2 times its original value. D) It decreases to one-fourth its original value. E) It increases to 8 times its original value.