An ammonia solution has a pH of 8.30, what is the [H3O+] in this solution?
A) 5.0 x 10^-23 M
B) 2.0 x 10^-6 M
C) 5.0 x 10^-9 M
D) 2.0 x 10^8 M
C
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A) the insecticide also killed the natural competitors and predators of the pests. B) the plants have now lost their ability to fight the pests. C) pesticides typically harm plants in ways that take several years to appear. D) new species that are more resistant to insecticides have evolved.
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What will be an ideal response?
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A) 1 B) 2 C) 4 D) either 2 or 4