A sample of iron weighs more after it rusts because
A. it has expanded into a greater volume.
B. of the additional oxygen it contains.
C. rust contains twice as many iron atoms.
D. Wrong. Iron actually weighs less after it rusts.
Answer: B
You might also like to view...
When an unfortunate bug splatters on the windshield of a moving car, which quantity experiences the same change?
A. acceleration. B. speed. C. both of these D. none of the above
Early gases that had begun to accumulate around Earth during the Early Archean were lost because of a lack of a(n) ____________________
Fill in the blank(s) with correct word
How many seconds are in a 24 hour day? [Assume exactly 24 hours in a day]
A) 60 B) 1.44 x 10^3 C) 3.60 x 10^3 D) 8.64 x 10^4
What is the source of organic matter in petroleum?
A. Land plants B. Metamorphosed coal C. Shale containing graphite D. Marine plankton