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vitfil [10]
3 years ago
13

Which of the following expands to fill the container it is in but can be compressed to a smaller volume when pressure is applied

?
A.solid iron
B. liquid bromine
C. neon gas
D. sugar crystals
Chemistry
1 answer:
goblinko [34]3 years ago
8 0

Answer: C. neon gas

Explanation:  There are three states of matter:

A. Solid iron: The molecules in solid are very tightly packed as inter molecular forces are very high. There is very less space between the particles and thus the molecules can not be compressed. They have fixed shape and volume.

B. liquid bromine: The molecules in liquid are less tightly packed as inter molecular forces are not very high. There is less space between the particles and thus the molecules can not be compressed. They have fixed volume and take the shape of the container.

C. neon gas : The molecules in gas are very less tightly packed as inter molecular forces are very low. There is large vacant space between the particles and thus the molecules can be compressed. They neither have fixed volume nor a fixed shape.They occupy complete volume of the container in which it is put.

D. sugar crystals: The molecules in solid are very tightly packed as inter molecular forces are very high. There is very less space between the particles and thus the molecules can not be compressed. They have fixed shape and volume.

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The pressure of a gas is reduced from 1200.0 mmHg to 1.11842 atm as the volume of its container is increased by moving a piston
Artist 52 [7]

Answer:

          \large\boxed{T_2=786.\ºC}

Explanation:

Ideal gases follow the combined law of gases:

         P_1V_1/T_1=P_2V_2/T_2

Where,

P_1,V_1, and{\text{ }T_1\text{ are the pressure, temperature, and volume of the gas a state 1}

P_2,V_2, and{\text{ }T_2\text{ are the pressure, temperature, and volume of the gas a state 2}

  • Pressure is the absolute pressure and its units may be in any system, as long as they are the same for both states.

  • Also, volume may be in any units, as long as it they are the same for both states.

  • Temperature must be absolute temperature, whose unit is Kelvin.

Your data are:

  • P₁ = 1200.00 mmHg
  • P₂ = 1.11842 atm
  • V₁ = 85.0 mL
  • V₂ = 350.0 mL
  • T₂ = ?
  • T₁ = 90.0ºC

<u>1. Conversion of units:</u>

  • P₁ = 1200.00 mmHg × 1.00000 atm / 760.000 = 1.578947 mmHg
  • T₁ = 90.00ºC + 273.15 = 363.15K

<u>2. Solution</u>

  • Clearing T₂, from the combined gas equation you get:

      T_2=P_2V_2T_1/(P_1V_1)

  • Substituting the data:

         T_2=1.11842atm\times 350.0ml\times 363.15K/(1.578947atm\times 85.0ml)

          T_2=1,059K

  • Convert to celsius:

         T_2=1059-273.15=786.\ºC

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3 years ago
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