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3 years ago

The substance that does the dissolving in a solution is called a(n) __________.

Chemistry

2 answers:

leonid [27]3 years ago

7 0

Easy, the answer is (C)

sergey [27]3 years ago

6 0

The answer is C solvent

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Which indicator would be the best to use if 0. 050 m benzoic acid ( k a = 6. 6 × 10 –5) is titrated with 0. 050 m naoh?

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I would say Phenolphthalein

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What is the element name for K2S

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A 5 g sample of pure gold has a density of 19.3 g/ml. Your friend purchased a gold ring that was made of 25 g of pure gold. What

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Answer:

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Explanation:

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Data Collection

vladimir2022 [97]

Answer:

For a): The mass percent of naphthalene in the original sample is 31.00 %.

For b): The mass percent of 3-nitroaniline in the original sample is 32.03 %.

For c): The mass percent of benzoic acid in the original sample is 29.97 %.

For d): The total percent recovered is 93.00 %.

Explanation:

Percentage by mass is defined as the ratio of the mass of a substance to the mass of the solution multiplied by 100. The formula used for this is:

$\text{Percent by mass}=\frac{\text{Mass of substance}}{\text{Mass of a solution}} \times 100$ ......(1)

a):

Mass of naphthalene = 0.483 g

Mass of the sample = 1.558 g

Plugging values in equation 1:

$\%\text{ mass of naphthalene}=\frac{0.483 g}{1.558}\times 100\\\\\%\text{ mass of naphthalene}=31.00 \%$

b):

Mass of 3-nitroaniline = 0.499 g

Mass of the sample = 1.558 g

Plugging values in equation 1:

$\%\text{ mass of 3-nitroaniline}=\frac{0.499 g}{1.558}\times 100\\\\\%\text{ mass of 3-nitroaniline}=32.03 \%$

c):

Mass of benzoic acid = 0.467 g

Mass of the sample = 1.558 g

Plugging values in equation 1:

$\%\text{ mass of benzoic acid}=\frac{0.467 g}{1.558}\times 100\\\\\%\text{ mass of benozic acid}=29.97 \%$

d):

Total mass recovered = [0.483 + 0.499 + 0.467] = 1.449 g

Mass of the sample = 1.558 g

Plugging values in equation 1:

$\text{Total percent recovered}=\frac{1.449 g}{1.558}\times 100\\\\\text{Total percent recovered}=93.00\%$

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3 years ago

7. How many electrons can be held in the energy level n = 4?

Dahasolnce [82]

Answer:

32 electrons

Explanation:

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