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scZoUnD [109]
4 years ago
12

A sample of nitrogen goes from 21L to 14L and it's pressure increases from 100kPa to 150kPa. The final temperature is 300K. What

was the initial temperature in Kelvins?​
Chemistry
1 answer:
Alik [6]4 years ago
8 0

Answer:

The initial temperature is 300 K (The temperature doesn't change)

Explanation:

Step 1: Data given

Initial volume = 21L

Final volume = 14L

Initial pressure = 100 kPa = 0.986923 atm

Final pressure = 150 kPa = 1.48038 atm

The final temperature = 300K

Step 2: Calculate the initial temperature

Calculate the initial temperature

(P1*V1)/T1 = (P2*V2)/T2

⇒with P1 = the initial pressure = 0.986923 atm

⇒with V1 = the initial volume = 21 L

⇒ with T1 = the initial temperature = ?

⇒with P2 = the final pressure = 1.48038 atm

⇒with V2 = the final volume = 14 L

⇒with T2 = the final temperature = 300 K

(0.986923 * 21)/T1 = (1.48038*14)/300

T1 = 300 K

The initial temperature is 300 K (The temperature doesn't change)

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Answer:

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(Lowest kinetic energy)

Explanation:

In gases, <em>kinetic energy is higher the higher the temperature is</em>. This is because the molecules have more available energy under those conditions. <u>Generally there's also an increase in kinetic energy if there's an increase in pressure</u> -assuming there's no phase changes ie. the gas condenses into a liquid-.

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3 years ago
A gas with a volume of 8 L at a temperature of 473K is switched to a new container with a temperature of 350K. If the pressure r
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Answer:

The new  volume is 5.92 L,  which is approximately 6 L

Explanation:

As the gas temperature increases, the molecules move faster and take less time to reach the walls of the container. This means that the number of crashes per unit of time will be greater. That is, there will be an increase (for an instant) in the pressure inside the container and the volume will increase.

So Charles's Law is one of the gas laws that relates the volume and temperature of a certain amount of gas at constant pressure and says that:

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Mathematically this is expressed by:

\frac{V}{T}=k

When you want to study two different states, an initial and a final one of a gas, this law is expressed by:

\frac{V1}{T1} =\frac{V2}{T2}

In this case:

  • V1: 8 L
  • T1: 473 K
  • V2: ?
  • T2: 350 K

Replacing:

\frac{8 L}{473K} =\frac{V2}{350K}

Solving:

V2=350K*\frac{8L}{473K}

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Answer:

Explanation:

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Such as alkane, alkene, alkyne.

Cyclic hydrocarbon:

c = Carbon chain that form rings.

Such as benzene, cyclo heptane etc

Isomers:

d = Compounds with same molecular formula and different structural formula.

Alkanes:

e = refers to saturated hydrocarbons, no matter the shape

such as methane, ethane, propane etc.

Alkene:

f = Any hydrocarbon that have at lest one carbon carbon double bond.

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Saturated hydrocarbons:

b = Carbon atoms are saturated with so many hydrogen atoms that no more bonds may be formed

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7 0
4 years ago
The degree of polarity of diatomic molecules is directly related to the difference in _____.
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The degree of polarity of diatomic molecule is related to the difference of electronegativity of the two atoms. If the difference is very large, i.e. one atom is highly electronegative and the other atom is highly electropostive then, the covalent bond is formed. But if the difference between the electronegativities is very less, then its likely that ionic bond is formed.
6 0
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Answer:

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Explanation:

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