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nignag [31]
3 years ago
11

Please help! Will give brainliest!!!!!!

Chemistry
1 answer:
djyliett [7]3 years ago
3 0

fission - splitting/dividing

gamma rays - high energy light

radioactive - release of atomic particles

beta rays - electrons

alpha rays - helium nuclei

fusion - joining together

plasma - ions and free electrons

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the vapor pressure of a naqueous solution is found to be 24.9 mmgh at 25C. what is the mole fraction of solute in this solution?
Gekata [30.6K]

Answer:

Mole fraction of solute is 0.0462

Explanation:

To solve this we use the colligative property of lowering vapor pressure.

First of all, we search for vapor pressure of pure water at 25°C  = 23.8 Torr

Now, we convert the Torr to mmHg. Ratio is 1:1, so 23.8 Torr is 23.8 mmHg.

Formula for lowering vapor pressure is:

ΔP = P° . Xm

Where ΔP = P' (Vapor pressure of solution) - P° (Vapor pressure of pure solvent)

Xm = mole fraction

24.9 mmHg - 23.8 mmHg = 23mmHg . Xm

Xm = (24.9 mmHg - 23.8 mmHg) /  23mmHg

Xm = 0.0462

8 0
3 years ago
Determine whether each statement is a description of a physical property or a chemical property. Please check the box that appli
sdas [7]
All except option two
5 0
3 years ago
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Which organelle in the table is correctly matched with its function?<br> which one is it??
Papessa [141]

Answer:

\huge\boxed{\sf Ribosomes}

Explanation:

<h3>Organelles and their function:</h3><h3><u>Lysosomes:</u></h3>
  • Lysosomes functions in the digestion of food of the cell.
  • It contains hydrolytic enzymes.
<h3><u>Vacuole:</u></h3>
  • Vacuole mostly functions in storage.
<h3><u>Mitochondrion:</u></h3>
  • Mitochondrion is the power house of the cell.
<h3><u>Ribosome:</u></h3>
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\rule[225]{225}{2}

4 0
2 years ago
Which of the following is an example of climate?
Svetach [21]
"<span>A. The polar regions have long winters and short, cool summers." would be the correct answer.
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7 0
3 years ago
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When an atom that has no charge loses two electrons, it becomes a:
Helen [10]

Answer: Option (a) is correct.

Explanation:

It is known that electrons hold a negative charge. So, when the negative charge that is electrons are taken out an atom then the number of electrons become less in number as compared to the number of protons.

Hence, the atom attains a positive charge.

An isotope is formed when an atom shows same number of protons and different number of neutrons. So, when an atom loses 2 electrons there will be no change in the number of neutrons. Therefore, an isotope will not form.

Thus, it is concluded that when an atom with no charge loses two electrons, it becomes a positive ion.


3 0
3 years ago
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