im not sure how to do these 3 problems can someone help?1What mass, in grams, of a 12.95% saline solution contains 60.4g of water?A saline solution contains two things; salt and waterYou are looking for the mass of the solution here, not the water alone nor the salt alone.2The volume of a 22.2% (by mass) sodium bromide solution is 145.66 mLThe density of the solution is 1.116 g/mLWhat is the mass of solute (sodium bromide) in this solution? 3Calculate the mass of silver that occupies the same volume as 32.0 g of aluminumThe density of Ag 10.49 g/cm3 and Al 2.70g/cm3please show how you did it so i can learn how to do them
1What mass, in grams, of a 12.95% saline solution contains 60.4g of water? the 12.95% means that you have a ratio of 12.85 g salt to 87.15 g H2O in a total of 100 grams of solution so 60.4g of water (100 g solution) / (87.15 g H2O) 69.31 grams of slution your answer, rounded to 3 sig figs is 69.3 grams of solution 2The volume of a 22.2% (by mass) sodium bromide solution is 145.66 mLThe density of the solution is 1.116 g/mLWhat is the mass of solute (sodium bromide) in this solution? use density to find mass of solution: 145.66 mL solution 1.116 g/mL 162.56 grams of solution find the mass of solute (sodium bromide) in this solution: 22.2% of 162.56 grams of solution 36.09 grams of NaBr your answer, rounded to 3 sig figs is 36.1 g NaBr 3Calculate the mass of silver that occupies the same volume as 32.0 g of aluminumThe density of Ag 10.49 g/cm3 and Al 2.70g/cm3 find volume of Al 32.0 g of aluminum 2.70g/cm3 11.85 ml find mass of Ag that occupies the same volume: 11.85 ml 10.49 g/cm3 124.33 g of Ag your answer, rounded to 3 sig figs is: 124 grams of Silver
