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stira [4]
3 years ago
7

Percent error of 76.48

Chemistry
1 answer:
Alekssandra [29.7K]3 years ago
4 0

Answer:

Explanation:

i’m not sure but I think it’s 7648%

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Answer:

A. The total mass of the reactants in a reaction equals the total mass of the product(s).

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The law of conversation of matter tells us that in a chemical reaction, matter is never created or destroyed, it's simply converted from one form to another. So the mass of reactants should always equal the mass of the products in a chemical reaction.

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3 years ago
When 20.0 grams of an unknown compound are dissolved in 500. grams of benzene, the freezing point of the resulting solution is 3
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Answer: 120g/mol

Explanation:

The first step we are to take is to calculate the freezing point depression of the solution.

ΔT(f) = freezing point of pure solvent - freezing point of solution

ΔT(f) = 5.48 - 3.77

ΔT(f) = 1.71°C

Next we are to calculate the molal concentration of the solution using freezing point depression

ΔT(f) = K(f) * m

m = ΔT(f)/K(f)

m = 1.71/5.12

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Now, we calculate the molecular weight of the unknown...

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5 0
3 years ago
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