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2 years ago

What visual criterion is to be used to assess whether the crude reaction product is dry prior to semimicro distillation

Chemistry

1 answer:

Olenka [21]2 years ago

5 0

The visual criterion which has to be assessed is to ensure it's not oily or sticky.

<h3>What is Distillation?</h3>

This is a separation technique that involves the use selective boiling and condensation to separate a liquid mixture into different components.

In the case of Crude reaction product , it is best to ensure that it is not oily or sticky before semimicro distillation is done.

Read more about Distillation here brainly.com/question/552187

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How can you tell when a solution is formed?

zhuklara [117]

You may tell when a solution os formed when the item or particle, such as sugar or salt,
dissolves completely in the solvent, such as water.

Basically, you know when a solution is formed when the material you have placed in the solvent disappears :P

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4 years ago

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The formula mass of a compound is the A) sum of the atomic masses of its atoms B) sum of the atomic numbers of its atoms C) prod

Digiron [165]

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3 years ago

A+uniform+cube+is+subjected+to+volume+expansion. +if+each+side+is+decreased+by+1%,+then+bulk+strain+is

laiz [17]

A uniform cube is subjected to volume expansion. Each side gets decreased by 1%, then the bulk strain is 0.03.

<h3>What is Volume?</h3>

Volume is the space occupied by a three-dimensional object.

<h3 />

Given that, the side cube is l, then

volume V = l³

$\dfrac{\Delta V}{V} = \dfrac{3D1}{1}$

For change in volume

% Change in volume = 3× % change in length

= 3 × 1%

Hence, bulk strain = 0.03.

Thus, the bulk strain is 0.03.

Learn more about bulk strain

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2 years ago

Determine the number of moles of air present in 1.35 L at 750 torr and 17.0°C. Which equation should you use? COMPLETE What is t

xxTIMURxx [149]

Answer:

0.0559 mol

Explanation:

Step 1: Given and required data

Volume of air (V): 1.35 L

Pressure of air (P): 750 torr

Temperature (T): 17.0 °C

Ideal gas constant (R): 0.0821 atm.L/mol.K

Step 2: Convert "P" to atm

We will use the conversion factor 1 atm = 760 torr.

750 torr × 1 atm/760 torr = 0.987 atm

Step 3: Convert "T" to Kelvin

We will use the following expression.

K = °C + 273.15

K = 17.0 °C + 273.15 = 290.2 K

Step 4: Calculate the number of moles of air

If we assume air behaves as an ideal gas, we can calculate the moles (n) of air using the ideal gas equation.

P × V = n × R × T

n = P × V/R × T

n = 0.987 atm × 1.35 L/(0.0821 atm.L/mol.K) × 290.2 K = 0.0559 mol

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3 years ago

What is the pH of a 0.286 M solution of hypochlorous acid (K, 2.9 x 10-8)?

vaieri [72.5K]

Answer:

PH= 2.54

Explanation:

Because the procedure involves many steps for its resolution and it works faster on paper and pencil, the detailed solution of this exercise is attached as a scanned image of the procedure for review.

In the procedure, the initial values of the problem and the replacement of these values with the correct formulas for this process are taken into account.

8 0

3 years ago