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maw [93]
3 years ago
8

State 2 postulates of kinetic theory of gases of 45 of 450

Chemistry
1 answer:
Ber [7]3 years ago
8 0

Explanation:

The kinetic theory of gases is basically used to explain the behavior of gases.

Some of the assumptions of the theory is as follow:

  • A gas is composed of large number of identical molecules at different speeds.
  • The space occupied by the gas molecules themselves are negligible compared to the volume of the space they occupy.
  • The molecules are independent of each other and the force of attraction and repulsion between them are negligible.
  • The molecules collide elastically with one another and with the walls of the container.
  • The temperature of gas is a measure of their average kinetic energy.

learn more:

molecular theory brainly.com/question/12362857

#learnwithBrainly

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Leya [2.2K]

Answer:

Noble Gases are very stable because...

1) Noble Gases have a full octet

2) Low chemical reactivity

Explanation:

This means that is has 8 valence electrons so it won't need any more, so it is less likely to react with other substances.

6 0
3 years ago
To answer this question, you will need to write the balanced equation and set up a BCA table. Using appropriate rounding rules,
Elenna [48]

Water decomposes when electrolyzed to produce hydrogen and oxygen gas. If 2.5 grams of water were decomposed 1.04 grams of oxygen will be formed.

BCA table:

2H_{2}O ⇒ H_{2} + O_{2}

B  0.13        0 + 0

C  -0.13      0.065 + 0.065

A  0             0.065

Explanation:

Balanced equation for water decomposition into hydrogen and oxygen gases

   2H_{2}O ⇒ H_{2} + O_{2}

B  0.13        0 + 0

C  -0.13      0.065 + 0.065

A  0             0.065

Number of moles of water = \frac{mass}{atomic mass of 1 mole}

mass = 2.5 grams

atomic mass= 18 grams

number of moles can be known by putting the values in the formula,

n = \frac{2.5}{18}

  = 0.13 moles

2 moles of water gives one mole of oxygen on decomposition

so, 0.13 moles of water will give x moles of oxygen on decompsition

\frac{1}{2} = \frac{x}{0.13}

x = 0.065 moles of oxygen will be formed.

moles to gram will be calculated as

mass =number of moles x atomic mass

        = 0.065 x 16

         = 1.04 grams of oxygen.

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Answer:

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After each half-life cycle, of the radioactive nuclei became nonradioactive.
kherson [118]

Answer:

half

Explanation:

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