[cartur2]

Consider a 1.50g mixture of magnesium nitrate and magnesium chloride. After dissolving this mixture in water, .500M silver nitrate is added dropwise until precipitate formation is complete. The mass of he white precipitate formed is .641g.

a. Calculate the mass percent of magnesium chloride in the mixture
b. Determine the minimum volume of silver nitrate that must have been added to ensure complete formation of the precipitate.

[mike]

hmm, what is your question?

Have you tried the question yet?

a. Write an equation, work out number of moles of precipitate, work out number of moles of reactant to make that precipitate, determine mass percent.

b. if you know the number of moles of silver nitrate (n) and its concentration (c) then use n = c x v to find volume

[Mitch]

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