Saturday, August 20, 2011
What is the concentration of calcium ions?
You have a 50mL water sample that has calcium ions in it, You add excess sodium carbonate (Na2CO3) until all the calcium precipitates out of solution. The precipitate is dried and weighed and it was determined that 3.7g of precipitate (CaCO3) was formed. What was the concentration (M) of calcium ions in the water sample?
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