Chemistry, 29.01.2020 02:08 tess92

Complete the table.
mass solute mass solvent mass solution mass percent
16.5 g 268.1 g
24.4 g 12.0 %
183.3 g 227.1 g
325.2 g 19.3 %

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Answer from: julio7264

Mass Solute Mass Solvent Mass Solution Mass Percent

16.5 g 268.1 g 302.60 g 5.45 %

24.4 g 178.93 g 203.33 g 12.0 %

43.8 g 183.30 g 227.10 g 19.28 %

76.28 g 325.20 g 401.48 g 19.3 %

Explanation:

Firstly, we should remember that:

mass % = [mass of solute/mass of solution] x 100.

mass of solution = mass of solute + mass of solvent.

For row 1: 16.5 g268.1 g

mass of solute = 16.5 g & mass of solvent = 268.1 g.

mass of solution = mass of solute + mass of solvent = 16.5 g + 286.1 g = 302.6 g.

mass % = [mass of solute/mass of solution] x 100 = (16.5 g/302.6 g) x 100 = 5.45 %.

For row 2: 24.4 g12.0 %

mass of solute = 24.4 g & mass % = 12.0 %.

∵ mass % = [mass of solute/mass of solution] x 100 = 12.0 %.

∴ mass of solution = (mass of solute/mass %) x 100 = (24.4 g/12.0 %) x 100 = 203.33 g.

∴ mass of solvent = mass of solution - mass of solute = 203.33 g - 24.4 g = 178.93 g.

For row 3: 183.3 g227.1 g

mass of solvent = 183.3 g & mass of solution = 227.1 g.

∴ mass of solute = mass of solution - mass of solvent = 227.1 g - 183.3 g = 43.8 g.

∴ mass % = [mass of solute/mass of solution] x 100 = (43.8 g/227.1 g) x 100 = 19.28 %.

For row 4: 325.2 g19.3 %

mass of solvent = 325.2 g & mass % = 19.3 %.

let mass of solute = x g, ∴ mass of solution = 325.2 g + x.

∵ mass % = [mass of solute/mass of solution] x 100 = 19.3 %.

0.19 = [mass of solute/mass of solution].

∴ 0.19 = (x) / (325.2 + x)

61.788 + 0.19 x = x.

∴ x - 0.19 x = 61.788.

0.81 x = 61.788

∴ x = mass of solute = 61.788/0.81 = 76.28 g.

∴ mass of solution = 325.2 g + x = 325.2 g + 76.28 = 401.48 g.

Answer from: Quest

Ido not understand.

Answer from: Quest

Standing in the sunlight and feeling the heat on your face (uv radiation is entering the skin, converting to infrared radiation, and is absorbed by your tissues)orstanding near a fire and feeling the heat on your skin (infrared radiation transfer)

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Complete the table.
mass solute mass solvent mass solution mass percent
16.5 g 268.1 g...

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