Soft water contains relatively large concentrations of
A) iron ions.
B) magnesium ions.
C) potassium ions.
D) calcium ions.
Correct Answer:
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Q2: Approximately what fraction of the earth's surface
Q3: All of the following statements are true
Q4: Heat capacity is a measure of the
Q5: Rainwater is
A)slightly acidic because it reacts with
Q6: The dramatic temperature changes on the moon
Q7: Rivers constitute _ percent of the surface
Q8: Water commonly exists in large amounts in
Q9: The majority of fresh water is found
Q10: The water cycle acts to purify water
Q11: Lakes and oceans affect climate by moderating
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