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natta225 [31]
3 years ago
9

Which substance is a mixture

Chemistry
1 answer:
Cerrena [4.2K]3 years ago
6 0

A mixture is made from different substances that are not chemically joined. For example, powdered iron and powdered sulfur mixed together makes a mixture of iron and sulfur.

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Which of these is a mixture??<br><br> A.) salad<br> B.) potassium<br> C.) water<br> D.) sugar
tensa zangetsu [6.8K]
Salad would be a mixture because it is not chemically combined, if needed you could physically take it apart. So your answer would be A.)
8 0
3 years ago
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Two liters of oxygen (O2) is collected over water at 20oC. If the total pressure in the container is 95.00 kPa, what is the part
garri49 [273]

Answer:

THE PARTIAL PRESSURE OF OXYGEN GAS IN THE CONTAINER IS 92.67kPa WHICH IS OPTION B.

Explanation:

To calculate the partial pressure of oxygen gas collected over water, we use

Ptotal = Poxygen + P water

It is worthy to note that when oxygen is collected over water, it is mixed with water vapor and the total pressure in the container will be the sum of the pressure exerted by the oxygen gas and that of the water vapor at that given temperature.

At 20 C, the vapor pressure of water as given in the question is 2.33 kPa.

Using the above formula,

Ptotal = Poxygen + P water

Substituting for Poxygen, we have;

Poxygen = Ptotal - P water vapor

P oxygen = 95 .00 kPa - 2.33 kPa

P oxygen = 92.67 kPa.

The partial pressure of oxygen gas in the container is hence, 92.67kPa.

3 0
3 years ago
3. Consider the following stereoisomers of isopropyl methacrylate. Provide the expected number of peaks, the integrations of tho
Ganezh [65]

Answer:

Check the explanation

Explanation:

When there are two molecules then these molecules are described as stereoisomers if they are comprised of the same atoms associated in the same sequence, but the atoms are situated differently in the space. The disparity between stereoisomers can only be observed when the molecules is considered in a three-dimensional arrangement.

Kindly check the attached image below to the step by step explanation to the question above.

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Which atoms have the same number of neutrons?
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<span>2) H-2 and He-3   N(n)=1

4) H-3 and He-4   N(n)=2</span>
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Grass is biotic- living.

please vote my answer brainliest. thanks!
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