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Alisiya [41]
3 years ago
5

**25 POINTS**. I doubt anyone will do this but it's worth a try to ask. To do this exercise, you will need fifteen containers, f

ive large, five medium, and five small. The "large" containers should be about the size of a soda pop can. The containers do not have to be transparent but they need to be shaped so that you will be able to easily pour water from them into a graduated cylinder. You will also need at least one 100-mL graduated cylinder. Ideally, you will also have a larger and smaller cylinder to use. (If, perhaps, you are using kitchen measuring cups instead of graduated cylinders, they need to have metric markings on them. Be sure to use the metric markings!) Be sure to read the volumes at eye level and at the bottom of the meniscus.
Make a supply of colored water to use in this experiment. Colored water will make it easier to read the meniscus.
Before you start, make a chart in which to record your estimates and actual values. You will also need your phone to take a picture of the large, medium, and small containers you are using to estimate the volume of water, as well as a picture of the graduated container you are using for the actual measurement.
Fill one of the large unmarked containers with colored water, estimate the volume in milliliters (mL) and put it into your chart.
Then carefully pour it into the graduated container to measure the actual water volume. Put the measurement into your chart.
Repeat this procedure with the other four "large" containers. When you have completed this task with the large containers, move on to the medium and small containers.
For the large containers, record your estimated volumes first, then determine the actual volumes and record these figures. Include the pictures that you took. For the medium containers, record your estimated volumes first, then determine the actual volumes and record these figures. Include the pictures that you took.
For the small containers, record your estimated volumes first, then determine the actual volumes and record these figures. Include the pictures that you took.
Chemistry
1 answer:
Travka [436]3 years ago
6 0

Answer:

done not that hard

Explanation:

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1 point
yawa3891 [41]
No one can read that
5 0
2 years ago
A very specific procedure scientists follow when conducting experiments is known as the
PtichkaEL [24]

Answer:

Scientific Method.

Explanation:

A scientific method is basically a method or a process when you conduct an experiment. Normally, the process goes like this:

1. You make like a question or something that you want to investigate, it's like the aim of the experiment.

2. You make an experiment and a hypothesis. A hypothesis is basically a guess on how the results of the experiment would turn out. You don't have to be correct for the hypothesis since there is no right or wrong answer.

3. Conduct the experiment. I don't think this needs a detailed explanation since experiments vary from one another.

4. Collect results. The data you collect come in different ways based on your experiment, but it is crucial you get data so that you can answer your question in 1.

5. Make inferences. You can't directly get a conclusion or answer from the results, so inferences are needed.

6. Craft a conclusion or answer. This is the final step when conducting an experiment and the part where you have the answer you needed when you conducted the experiment :)

5 0
3 years ago
What is the volume of 0.640 grams of Oz gas at Standard Temperature and Pressure (STP)?
Ilia_Sergeevich [38]

Answer: The volume of 0.640 grams of O_{2} gas at Standard Temperature and Pressure (STP) is 0.449 L.

Explanation:

Given: Mass of O_{2} gas = 0.640 g

Pressure = 1.0 atm

Temperature = 273 K

As number of moles is the mass of substance divided by its molar mass.

So, moles of O_{2} (molar mass = 32.0 g/mol) is as follows.

No. of moles = \frac{mass}{molar mass}\\= \frac{0.640 g}{32.0 g/mol}\\= 0.02 mol

Now, ideal gas equation is used to calculate the volume as follows.

PV = nRT

where,

P = pressure

V = volume

n = no. of moles

R = gas constant = 0.0821 L atm/mol K

T = temperature

Substitute the values into above formula as follows.

PV = nRT\\1.0 atm \times V = 0.02 mol \times 0.0821 L atm/mol K \times 273 K\\V = 0.449 L

Thus, we can conclude that the volume of 0.640 grams of O_{2} gas at Standard Temperature and Pressure (STP) is 0.449 L.

6 0
3 years ago
A chemical reaction produces 3.81g potassium chloride (KCl). How many formula units of potassium chloride are there? *Find Molar
Aleks04 [339]

Answer:

The number of formula units in 3.81 g of potassium chloride (KCl) is approximately 3.08 × 10²²

Explanation:

The given parameters is as follows;

The mass of potassium chloride produced in the chemical reaction (KCl) = 3.81 g

The required information = The number of formula units of potassium chloride (KCl)

The Molar Mass of KCl = 74.5513 g/mol

The \ number \ of \ moles \ of \ a \ substance, n = \dfrac{The  \  mass  \  of  \  the substance}{The   \  Molar  \   Mass   \  of  \   the   \  substance}

Therefore, we have;

The \ number \ of \ moles \ of \ KCl= \dfrac{3.81 \ g}{74.5513 \ g/mol} \approx 0.051106 \ moles

1 mole of a substance, contains Avogadro's number (6.022 × 10²³) of  formula units

Therefore;

0.051106 moles of KCl contains 0.051106 × 6.022 × 10²³  ≈ 3.077588 × 10²² formula units

From which we have, the number of formula units in 3.81 g of potassium chloride (KCl) ≈ 3.08 × 10²² formula units.

8 0
2 years ago
What are the evidence of continental drift
Veronika [31]
Widespread distribution of Permo-Carboniferous glacial sediments in South America, Africa, Madagascar, Arabia, India, Antarctica and Australia was one of the major pieces of evidence for the theory of continental drift.
5 0
3 years ago
Read 2 more answers
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