Which of the following elements will most likely form an ion with a ?2 charge?
A. Ne
B. S
C. Na
D. Cl
E. Mg
Answer: B
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An enterprising travel agent trying to sell you a summer vacation package to Calgary, Alberta, claims that the summertime relative humidity is above 90 percent. Can this be true? Explain.
What will be an ideal response?
When water in a stream or desert wash decreases in velocity, sediment that the stream carries can be deposited in
A) a delta. B) an alluvial fan. C) a floodplain. D) All of these are correct.
The feeding interactions among species in a community are best described as a(n) ________
A) energy flow B) succession C) trophic level D) food web E) trophic cascade
If a solution is prepared by dissolving 7.7 g of lithium iodide, LiI, in enough water to make 400. mL of solution, what is the %(w/v) of LiI?
A) 0.96% B) 1.9% C) 3.9% D) 7.7%