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An Introduction to Thermal Physics 1
Problem 35P According to the Sackur-Tetrode equation, the entropy of a monatomic ideal gas can become negative when its temperature (and hence its energy) is sufficiently low. Of course this is absurd, so the Sackur-Tetrode equation must be invalid at very low temperatures. Suppose you start with a s

General, Organic, and Biological Chemistry: Structures of Life 4
Problem 10SC What is the formula of iodine heptafluoride?

Chemistry 11
In determining the density of a rectangular metal bar. a student made the following measurements: length, 8.53 cm; width, 2.4 cm; height, 1.0 cm; mass, 52.7064 g. Calculate the density of the metal to the correct number of significant figures.

Chemistry 11
The molecular formula of malonic acid is \(\mathrm{C}_{3} \mathrm{H}_{4} \mathrm{O}_{4}\). If a solution containing 0.762 g of the acid requires 12.44 mL of 1.174 M NaOH for neutralization, how many ionizable H atoms are present in the molecule?

Campbell Biology 10
How is photosynthesis similar in C4 plants and CAM plants? a. In both cases, only photosystem I is used. b. Both types of plants make sugar without the Calvin cycle. c. In both cases, rubisco is not used to fix carbon initially. d. Both types of plants make most of their sugar in the dark.

Principles of Economics 6
If a Japanese car costs 500,000 yen, a similar American car costs $10,000, and a dollar can buy 100 yen, what are the nominal and real exchange rates?

Advanced Engineering Mathematics 10
Why are the square errors in Prob. 5 substantially larger than in Prob. 3?

Plant Systematics 3
What is the difference between parallel and penni-parallel? Between pinnate-netted, palmatenetted, and ternate-netted?