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what is the mass percent concentration of a solution prepared by dissolving 235 grams of calcium nitrate in 1.21 kg of water?

Answer :

The mass percent concentration of a solution is defined as the ratio of the mass of solute to the total mass of the solution, expressed as a percentage. In this case, we are given the mass of the solute (235 grams of calcium nitrate) and the mass of the solution (1.21 kg of water).

To calculate the mass percent concentration, we need to first convert the mass of the solution to grams:
1.21 kg x 1000 g/kg = 1210 g
Next, we can calculate the total mass of the solution by adding the mass of the solute and the mass of the water:
235 g + 1210 g = 1445 g
Finally, we can calculate the mass percent concentration by dividing the mass of the solute by the total mass of the solution, and multiplying by 100 to express the result as a percentage:
(235 g / 1445 g) x 100 = 16.26%

Therefore, the mass percent concentration of the solution prepared by dissolving 235 grams of calcium nitrate in 1.21 kg of water is 16.26%.

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