During an isothermal process, 5.0 J of thermal energy via the process of heating is removed from an ideal gas. What is the change in internal (thermal) energy of the gas?
A) 0 J
B) 2.5 J
C) 5.0 J
D) 10 J
A
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What will be an ideal response?
The length and width of a standard sheet of paper is measured, and then the area is found by calculation to be 91.50 in.2 . The number of significant figures in the width measurement must be at least
a. 1. b. 2. c. 3. d. 4. e. 5.
How many different nucleotide bases are used in nucleic acids in life on Earth (consider both DNA and RNA)?
A) 25 B) 4 C) 20 D) 5
A champion athlete can produce one horsepower (746 W) for a short period of time. If a 70-kg athlete were to bicycle to the summit of a 500-m high mountain while expending power at this rate, she would have used at least ____ J of energy.
A. 746 B. 3.43 × 105 C. 3.73 × 105 D. 7.46 × 105 E. 2.61 × 107