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November 1, 2014

November 1, 2014

Posted by **anne** on Monday, October 8, 2012 at 9:37pm.

a)why is it important for the student to add HCl before filtering the juice to remove pulp?

i said because if you were to dissolve it with water, the calcium would ppt out as Ca(OH)2 so instead we use HCl so that the Ca forms CaCl2 and stays in solution. is that true?

b)according to the juice label, "each serving contains 20% of the USRDA of calcium," and one serving is defined as 6 oz or 178mL. Does the student's analysis verify this claim? Briefly Explain.

Please be specific and I'd appreciate any help I could get! thanks!

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