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oksano4ka [1.4K]
3 years ago
10

In this experiment, you were asked to calculate your percent yield of alum assuming that you started with pure aluminum. Actuall

y, the aluminum had a plastic coating on it. Will the percent yield calculated (assuming pure aluminum metal) be higher, lower, or the same as the true percent yield (considering the plastic coating)? Explain

Chemistry
1 answer:
neonofarm [45]3 years ago
3 0

Answer:

Percent yield of alum is 38.6%

Explanation:

Find attached calculations for detailed explanation.

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The monomer of poly(vinyl chloride) has the formula C2H3Cl. If there are 1,565 repeat units in a single chain of the polymer, wh
monitta

Answer:

\large \boxed{9.780 \times 10^{4}\text{ u}}

Explanation:

The molecular mass of a monomer unit is:

C₂H₃Cl = 2×12.01 + 3×1.008 + 35.45 = 24.02 + 3.024 + 35.45 = 62.494 u

For 1565 units,

\text{Molecular mass} = \text{1565 units} \times \dfrac{\text{62.494 u}}{\text{1 unit }} = \mathbf{9.780 \times 10^{4}}\textbf{ u}\\\\\text{The molecular mass of the chain is $\large \boxed{\mathbf{9.780 \times 10^{4}}\textbf{ u}}$}

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3 years ago
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Organic molecules typically do not contain the noble gases, so they would contain all but Ne
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<u>Answer:</u>

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