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Answer the following problems showing all work.
1. If I have a potassium nitrate solution @56degC, how many grams of H2O do I need if I have 653g of potassium nitrate.?
2. How many grams of sodium carbonate do you need to add to make 750.ml of a 0.875M solution?
3. How many kg H2O do I need to add to 0.457m (molality) calcium nitrite solution where 2.45g of the solute was added?
4. What is the new volume, if I dilute 2.57L of a 0.745M solution to a 0.500M solution?
Answer: 1) 695g H2O (assuming S = 94g/100g) , 2) 69.6g Na2CO3, 3) 0.0406kg, 4) 3.83L