An acid solution has a pH of 2.3. Find the hydrogen ion concentration of this solution.
A. 5.01 mol/L [H+]
B. 5.01 × 10-3 mol/L [H+]
C. 2.00 × 10-12 mol/L [H+]
D. 2.3 mol/L [H+]
Answer: B
Mathematics
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A. - 
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D. 
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Provide an appropriate response.Simplify by combining like terms: 3a - a - 6a
A. -3a B. 0 C. 4a D. -4a
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Solve the problem.On a map of the Fox River, 1 centimeter equals 2 kilometers. If a trail by the river is actually 
long, what is the length of the river on the map?
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