QUESTION 19 A sample of lake water at 25°C has a hardness of 25 mg/L and [Mg2+] 1.0×104 M. Which of the following statements is true? OA Hardness index of the lake water is 25 mg CaCO3/L OB. Hardness index of the lake water is 0.25 M. OC Hardness index of the lake water is 25 M DD. Hardness index of the lake water is 2.5 M
QUESTION 19 A sample of lake water at 25°C has a hardness of 25 mg/L and [Mg2+] 1.0×104 M. Which of the following statements is true? OA Hardness index of the lake water is 25 mg CaCO3/L OB. Hardness index of the lake water is 0.25 M. OC Hardness index of the lake water is 25 M DD. Hardness index of the lake water is 2.5 M
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
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![QUESTION 19
A sample of lake water at 25°C has a hardness of 25 mg/L and [Mg2+] 1.0×104 M. Which of the following statements is true?
OA Hardness index of the lake water is 25 mg CaCO3/L
OB. Hardness index of the lake water is 0.25 M.
OC Hardness index of the lake water is 25 M
DD. Hardness index of the lake water is 2.5 M](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F1eb66781-7cef-498e-8f6b-146b206844f3%2F28049482-c6ff-4dd1-b137-9294afe978ed%2Fde584zn_processed.jpeg&w=3840&q=75)
Transcribed Image Text:QUESTION 19
A sample of lake water at 25°C has a hardness of 25 mg/L and [Mg2+] 1.0×104 M. Which of the following statements is true?
OA Hardness index of the lake water is 25 mg CaCO3/L
OB. Hardness index of the lake water is 0.25 M.
OC Hardness index of the lake water is 25 M
DD. Hardness index of the lake water is 2.5 M
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