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August 22nd, 2017, 11:43 AM   #1
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how to calculate two molarities in one solution

150 mL of a solution contains 250 mg of Magnesium Chloride B.P. (MgCl2.6H2O, M.Wt. 203.3).
What mass of sodium chloride (NaCl, M.Wt. 58.5) must be added such that when 100 mL of the solution is mixed with water and made up to 250 mL, the final concentration of chloride is 12 mmol/L?
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August 22nd, 2017, 06:16 PM   #2
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Already asked and answered here.
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August 22nd, 2017, 07:35 PM   #3
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Math Focus: सामान्य गणित
Originally Posted by skipjack View Post
Already asked and answered here.
Even the data are same
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August 23rd, 2017, 10:52 PM   #4
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Hey amas4ever, it's such a coincidence that we posted the exact same question! We probably are doing the same course at university. Are you doing pharmacy? How are you finding the pharmaceutical calculations?

Last edited by skipjack; August 23rd, 2017 at 11:29 PM.
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