In a battery, the following oxidation-reduction reaction is taking place: Mn2O3 + ZnO ? 2 MnO2 + Zn What is undergoing reduction as written?
A) Zn
B) ZnO
C) MnO2
D) Mn2O3
E) none of the above
B
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The economically and politically powerful interests that receive perverse subsidies spend a lot of time and money on ____, thus shifting to non-perverse subsidies would be difficult.
A. lobbying B. lawyers C. bribes D. policies E. politicians
The features seen in the fossil bird Archaeopteryx
A. show that Archaeopteryx had feathers, but not wings. B. support the hypothesis that birds evolved from dinosaur ancestors. C. show that Archaeopteryx is not a remnant of a living organism, but an unusual rock formation. D. suggest that birds and dinosaurs were designed to fit into different kinds of habitats and then placed there.
The resistance of a mineral to scratching or abrasion is known as ________
A) luster B) cleavage C) streak D) hardness
As the island of Hawaii continues to move away from the mantle plume, a new submarine volcano will be created. Off which coast would you expect the new submarine volcano to be forming?
A) North coast B) Southwest coast C) Northeast coast D) Southeast coast