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3 years ago

Which scenario is most similar to the type of collision that gas particles have according to kinetic molecular theory?

Chemistry

2 answers:

Ugo [173]3 years ago

6 0

I’m not for sure but I think it’s A.

Anna007 [38]3 years ago

5 0

Answer:

The correct answer is C.

Explanation:

The kinetic theory of gases postulates that the directions and magnitudes of the velocities of the molecules are randomly distributed.

In this way, the behavior of these molecules can be represented as the collision of two billiard balls, since the velocities and directions of these after the collision are randomly distributed.

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Which material is the most dense?

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Osmium is the most densest substance

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3 years ago

What is the specific heat capacity of an unknown metal if 55.00 g of the metal initially at 90°C is placed in 75mL of water with

Lisa [10]

Answer:

The specific heat capacity of the unknown metal is <u>1.04 J/g°C.</u>

Explanation:

Let the specific heat capacity of the unknown metal be $x$ .

Given:

Mass of the metal is, $m=55\ g$

Initial temperature of the metal is, $T_i=90\ \°C$

Volume of water is, $V=75\ ml$

Specific heat capacity of water is, $c_w=4.186\ J/g\°C$

Initial temperature of water is, $T_{wi}=25\ \°C$

Final temperature of the system is, $T=35\ \°C$

We know that density of water is equal to 1 g/ml.

Mass is given as the product of density and volume.

Therefore, mass of water is given as:

$m_w=1\times 75=75\ g$

Now, fall of temperature of the unknown metal is given as:

$\Delta T_m=T_i-T=90-35=55\ \°C$

Rise of temperature of water is given as:

$\Delta T_w=T-T_{wi}=35-25=10\ \°C$

Now, as per conservation of energy,

Heat lost by metal = Heat gained by water

⇒ $mx\Delta T_m=m_wc_w\Delta T_w$

Plug in all the given values and solve for $x$ . This gives,

$55\times x\times 55=75\times 4.186\times 10\\3025x=3139.5\\x=\frac{3139.5}{3025}=1.04\ J/g\°C$

Therefore, the specific heat capacity of the unknown metal is 1.04 J/g°C.

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3 years ago

Subtracting atomic number from atomic mass will give the number of

faltersainse [42]

Answer:

Explanation:

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2 years ago

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Answer:

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Explanation:

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2 years ago

What is it ? Multiple choice

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