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Sphinxa [80]
3 years ago
12

Explain what happens when something dissolves.

Chemistry
2 answers:
Anettt [7]3 years ago
6 0

Answer:

During dissolving, particles of solvent collide with particles of solute. They surround the particles of solute, gradually moving them away until the particles are evenly spread through the solvent.

Mandarinka [93]3 years ago
3 0
If powder is poured into water it dissolves,the solids aren’t there no more because they’ve dissolved into the water therefore when something dissolves it’s not there no more at least not in the same state of matter
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kirill115 [55]

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A 6.59-gram sample of a compound is dissolved in 250. grams of benzene. The freezing point of this solution is 1.02°C below that
iren2701 [21]

Answer:

30.12 g/m is the molar mass of the compound

Explanation:

Freezing point depression to solve this. The formula for the colligative property is:

ΔT = Kf . m

ΔT = T° freezing pure solvent - T° freezing solution

Kf = Cryoscopic constant

m = molality (mol/kg)

T° freezing pure benzene: 5.5°C

(5.5°C - 1.02°C) = 5.12 °C/m . m

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4.48°C / 5.12 °C/m = m → 0.875 mol/kg

Mol = mass / molar mas

Molality = mol /kg

Let's find out the molar mass, with this equation:

(6.59 g / Molar mass)  / 0.250 kg = 0.875 mol/kg

6.59 g / molar mass = 0.875 mol/kg . 0.250 kg

6.59 g / molar mass = 0.21875 mol

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4 years ago
Systematic name for Fe2O3 (s)
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Explanation:

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In the absence of catalyst, we need to increase the temperature so that reaction can occur quickly.

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