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What is the mass percent of a solution formed by dissolving 50 g of glucose in 1000 g of water?
The total mass of the solution is the sum of the mass of the solute (glucose) and the mass of the solvent (water), which is 50 g + 1000 g = 1050 g. The mass percent of the solute (glucose) in the solution is the mass of the solute divided by the total mass of the solution, multiplied by 100. Therefore, the mass percent of glucose in the solution is (50 g / 1050 g) x 100 = 4.76%.
How is a number of moles of an element determined from a known mass?
The number of moles is mass in g/molar mass in g.
What is the mass percent of a solution that is prepared by dissolving 4.0 g of KCl in 50.0 g of H2O?
Mass percent is the ratio of the mass of solute to the total mass of solution expressed as a percent Here we have 4.0 g solute and total mass of solution of 4.0 g + 50.0 g = 54.0 g. So, the mass percent of KCl = 4.0 g/54.0g (x100) = 7.41% (3 sig figs)
What is the mass in grams of 0.330mol of calcium?
To find the mass in grams of 0.330 mol of calcium, you need to use the molar mass of calcium which is 40.08 g/mol. Mass = moles x molar mass Mass = 0.330 mol x 40.08 g/mol = 13.24 g.
How do you calculate percent by mass?
Example:- 454 g of orange jam contain 83 g sugar454 g jam---------------83 g sugar100 g jam----------------x g sugarx= 100x83/454= 18,18 g sugar (or 18 % sugar)
