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3 years ago

Describe the process used to measure out a specific mass of a solid

1 answer:

7 0

Although the process varies slightly from one material to another, the general process is as follows:

1) Choose an appropriate container for the solid. This may be a petri dish or a beaker in which you want to prepare the solution of the solid or any other lab equipment.

2) Place the container on a mass balance, then turn the balance on. The mass balance will automatically zero-out the mass of the container, so that any mass that you add on the container will be the mass of the solid. Alternatively, you may first measure the mass of the empty container alone.

3) Add the solid using a lab spatula. The solid should be added more slowly when the reading on the scale comes close to the desired value.

4) Remove the container from the mass balance after the desired amount of solid has been added.

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Given that E°red = -0.40 V for Cd2+/Cd at 25°C, find E° and E for the concentration cell expressed using shorthand notation belo

tensa zangetsu [6.8K]

From the information in the question, the E° and E for the cell is 0.00 V and 0.12 V.

Using the Nernst equation;

Ecell = E°cell - 0.0592/n log Q

We know that E°cell = 0.00 V since the anode and cathode are both made up of cadmium.

Substituting the given values into the Nernst equation;

Ecell = 0.00 V - 0.0592/2 log (1.0 × 10-5 M/0.100 M)

Ecell = 0.00 V - 0.0296 log(1 × 10^-4)

Ecell = 0.12 V

Learn more: brainly.com/question/8646601

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3 years ago

can you help me I'm trying to do a lm trying to do a keynote and i need to know what it means and what it dose

yanalaym [24]

Here are my quick example slides:

1st Picture:
just a title page

2nd Picture:
I just gave the definition of an organelle you could go more in-depth. The picture doesn't have to be there, of course.

3rd Picture:
Examples of organelles in plant and animal cells, these are just examples of how I would do one.

This was just to show how you could do it because it would be kind of hard for me to explain just in words.

Hope I could help! c:

8 0

3 years ago

What is the chemical name of the compound

disa [49]

A.) ammonium thiocyanate

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2 years ago

Chromium has four naturally occurring isotopes. cr-50 (mass of 49.946 amu and 4.35% abundance); cr-52 (mass of 51.941 amu and 83

satela [25.4K]

The average atomic mass of chromium to 3 decimal points is 52. 055 g. mol.

<h3>What is the average atomic mass?</h3>

"The weighted average mass of the atoms in a naturally occurring sample of an element is the average atomic mass, also known as atomic weight."

Given the different isotopes of chromium.

The four isotopes of chromium are cr-50, cr-52, cr-53 cr-54.

The average atomic mass will be

Let us take the weighted average of your isotopes:

50 × 0.0434 + 52 × 0.8379 + 53 × 0.095 + 54 × 0.0237 = 52. 055 g.

Thus, the average atomic mass of chromium is 52. 055 g.

To learn more about average atomic mass, refer to the link:

brainly.com/question/13753702

#SPJ4

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2 years ago

1. What is the importance of standardizing units world wide?

slega [8]

Answer:

The standred units of measurements are important to scientists because they are the same measurements that all scientist take to make sure that they all have the correct results.

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2 years ago