Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?
What will be an ideal response?
Because H2 is losing 2 electrons this is an oxidation half reaction.
This would be balanced by the reduction half reaction F2+ 2e- ? 2F-
Finally the 2H+ + 2F-? 2HF
Putting this all together you get the reaction: H2+ F2? 2HF
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In examining an unknown animal species during its embryonic development, how can you be sure what you are looking at is a protostome and not a deuterostome?
A) There is evidence of cephalization. B) You see a well-developed coelom. C) The animal is triploblastic. D) The animal is clearly bilaterally symmetrical. E) You see a mouth, but not an anus.
The prolonged low temperature exposure required for the germination of some seeds:a
is typical of coconuts. b. provides an alternative to the process of imbibition. c. prevents them from growing in flooded, anaerobic soils.
d. allows the seeds to conserve limited food stores. e. ensures that the seeds germinate in spring, rather than in fall.
All organisms possess a genetic system that is based on:
A. RNA B. DNA C. protein D. sugars E. cells
Situations in which one allele for a gene is not completely dominant over another allele for that gene are called
A) polygenic inheritance. B) multiple genes. C) multiple alleles. D) incomplete dominance.