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標題:
A Chemistry Dilution Problem
發問:
A chemist has 40.0 g of ammonium iodide. He wants to make a 0.3M solution. He adds the salt to 500.0 mL of water. How much more water must be added to make a solution with the required concentration? Thz ....help plz
最佳解答:
其他解答:D1B39E80075704FD
A Chemistry Dilution Problem
發問:
A chemist has 40.0 g of ammonium iodide. He wants to make a 0.3M solution. He adds the salt to 500.0 mL of water. How much more water must be added to make a solution with the required concentration? Thz ....help plz
最佳解答:
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Molar mass of ammonium iodide = 144.94 g/mol So no. of moles of ammonium iodide = 40/144.94 = 0.2760 Thus, to make a solution of 0.3M, water needed = 0.2760/0.3 = 0.920 dm3 = 920 mL Therefore, 420 mL of more water are needed to be added.其他解答:D1B39E80075704FD
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