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03-14-2008, 01:59 AM
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| Chemistry and dealing with final concentrations, when given mL and Molarity.? A 100 mL of .250M of calcium nitrate solution is mixed with 400 mL of 100M nitric acid solution. What is the final concentration of nitrate ion? Yes, thank you. I meant to put .100 M of nitric acid.      |
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03-14-2008, 01:59 AM
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| Moles Ca(NO3)2 = 0.100 L x 0.250 = 0.0250 moles NO3- = 0.0250 x 2 = 0.0500 Moles HNO3 = 0.400 L x 100 = 40 total moles = 40.0500 total volume = 500 mL = 0.500 L concentration NO3- = 40.0500 / 0.500 = 80.1 M NOTE : I presume that the concentration of nitric acid is not 100 M |
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