All of the following statements are true of hard water EXCEPT
A) it contains calcium salts.
B) it contains iron salts.
C) it contains only Na+ and K+ ions.
D) it forms an insoluble scum with soap.
Correct Answer:
Verified
Q4: Water's unique properties, including its high heat
Q4: Heat capacity is a measure of the
Q5: Rainwater is
A) slightly acidic because it reacts
Q7: Rivers constitute _ percent of the surface
Q9: The majority of fresh water is found
Q11: Lakes and oceans affect climate by moderating
Q13: Contaminated water supplies and lack of adequate
Q14: Heat of vaporization is the amount of
Q19: The saltiness of the oceans is
A)decreasing slowly.
B)increasing
Q20: What percentage of water on the earth
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