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VMariaS [17]
3 years ago
15

The

Chemistry
1 answer:
Marat540 [252]3 years ago
4 0

Answer:

Isotopes

Explanation:

Isotopes are atoms of the same element that contain an identical number of protons, but a different number of neutrons. Despite having different numbers of neutrons, isotopes of the same element have very similar physical properties.

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At 650 mm hg a gas has a volume of 190 l what is its volume at standard pressure
vovangra [49]

Answer:Volume occupied by the gas at standard pressure is 162.5 L.

Explanation:

Pressure of the gas when it occupies volume of 190 L = 650 mmHg

Volume occupied by the gas when the gas is at standard pressure.

The value of standard pressure = 1 atm = 760 mmHg

P_1=650 mmHg,V_1=190 L,P_2=760 mmHg,V_2=?

According to Boyle's Law: Pressure\propto \frac{1}{Volume} (at constant temperature)

P_1\times V_1=P_2\times V_2

V_2=\frac{P_1\times V_1}{P_2}=\frac{650 mmHg\times 190 L}{760 mmHg}=162.5 L

Volume occupied by the gas at standard pressure is 162.5 L.

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3 years ago
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How does the temperature of the air cause a breeze to blow toward the land?
Anit [1.1K]

Answer:

The warm air over the land will rise throughout the day, causing low pressure at the surface. Over the water, high surface pressure will form because of the colder air. ... The wind will blow from the higher pressure over the water to lower pressure over the land causing the sea breeze.

Explanation:

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8 0
2 years ago
The freezing and thawing action of water affects a rock by?
Alex Ar [27]
<span>The water soaks in the cracks of rocks, freezes and expands breaking the rock apart.</span>
6 0
3 years ago
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Arrange the following ions in order of increasing ionic radius.
Zepler [3.9K]

Answer:

Ca 2+ <K  +  <Ar<Cl  −  <S  2−

Explanation:

Ar,K  + ,Cl  − ,S  2− ,Ca  2+

 have the same number of electrons. Their radii would be different because of their different nuclear charges. The cation with the greater positive charge will have a smaller radius because of the greater attraction of the electrons to the nucleus. Anion with the greater negative charge will have the larger radius. In this case, the net repulsion of the electrons will outweigh the nuclear charge and the ion will expand in size. Hence the correct order will be Ca  

2+  <K +  <Ar<Cl  −  <S  2−

 

3 0
2 years ago
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