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3 years ago

Mention the various ways by which soluble and insoluble salts are prepared

Chemistry

1 answer:

LUCKY_DIMON [66]3 years ago

4 0

Answer:

Explanation:

soluble and insoluble salts are prepared by processes like neutralization reactions, simple displacement reactions and double displacement reactions.

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In which of these systems is the entropy decreasing?

Delicious77 [7]

"A gas condensing to a liquid" is the one system among the following choices given in the question where the entropy is decreasing. The correct option among all the options that are given in the question is the fourth option or option "D". I hope that this is the answer that has come to your desired help.

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3 years ago

A few Critical Thinking questions/creativity on the topic 'Particles of matter are very small'

Nookie1986 [14]

Answer:

Any substance which occupies space and has mass is known as matter. States of matter: Matter exist in three different states that are Solid, Liquid and Gas. Matter is made up of very small particles

Explanation:

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3 years ago

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3 years ago

A container was found in the home of the victim that contained 130 g of ethylene glycol in 380 g of liquid. What was the percent

Kaylis [27]

Answer:

34.21%

Explanation:

Given parameters:

Mass of ethylene glycol in the container = 130g

Mass of the liquid in total = 380g

Unkown:

Percentage of ethylene glycol in the liquid =?

Solution

To find the percentage of the ethylene glycol in liquid, we use the expression below:

Percentage of ethylene glycol in liquid = $\frac{mass of ethylene glycol}{mass of liquid}$ x 100

Percentage of ethylene glycol = $\frac{130}{380}$ x 100

Percentage of ethylene glycol = 34.21%

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3 years ago

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:

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

8 0

3 years ago