Identify the acid or base behavior of each substance in these reactions: HSO4- + H2O ? OH- + H2SO4
A) HSO4- acts as an acid, H2O acts as a base, OH- acts as an acid, H2SO4 acts as a base.
B) HSO4- acts as a base, H2O acts as an acid, OH- acts as an acid, H2SO4 acts as a base.
C) HSO4- acts as an acid, H2O acts as a base, OH- acts as a base, H2SO4 acts as an acid.
D) HSO4- acts as a base, H2O acts as an acid, OH- acts as a base, H2SO4 acts as an acid.
D
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Ice core data show that atmospheric CO2 concentrations were higher during each of the major glacial
periods and lower during the warmer interglacial periods Indicate whether the statement is true or false.
Scholars of the Ancient World
A) had a remarkable knowledge of planetary dimensions. B) were all convinced that Earth was flat. C) all lived along the eastern Mediterranean. D) made maps, but not as accurate as those made in the years 100-500 A.D. E) practiced philosophy but were not concerned with geography as we know it today.
A vector is an organism that ________
A) a host species vulnerable to infection B) carries a parasite but is never affected by it C) preys upon vulnerable species D) is beneficial to parasitized organisms E) is always parasitic
When did the Moon form?
a. in Hadean Eon b. in Archean Eon c. in Tertiary Period d. in Paleozoic Era