The ratio of substance X to substance Y in a solution is measured in two separate trials. The concentrations, ratios of X/Y, and log(X/Y) are presented in this table
Trial Concentration of X Concentration of Y Ratio X/Y log(X/Y)
1 20 10 2 0.301
2 10 20 0.5 ?
What is the log of X/Y from trial 2?
A) 0.301
B) -0.301
C) 3.01
D) -3.01
B
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