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1. What mass of lithium phosphate is needed to prepare 575 mLof a solution having a lithium ion concentration of 0.250 M?

2. 75.0 mL of 0.355 M hydrochloric acid is added to 25.0 mLof 0.298 M MgCl2 . What is the concentration of chlorideion in the final solution?

3. How many grams of water are formed when 17.5 g of oxygen reacts with nitrogen?(hint: you need to write a balancedeqn.

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