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Rashid [163]
3 years ago
13

These three members of the Noble gas family (helium, neon, and argon) all have one property in common because they are gases at

room temperature. That is they
A)
are combustible.


B)
are compressible.


C)
are relatively dense.


D)
have no definite shape but a definite volume.
Chemistry
2 answers:
yarga [219]3 years ago
8 0

B)  are compressible.

Explanation:

The three members of the noble gas family are all compressible in nature and they are monoatomic gaseous molecules.

There are three states of matter which are:

  Solid

   liquid

    Gases

Gases are random matter that have not fixed shape and volume. This implies that they can easily fit into any container they are placed into. Their state of motion is randomized and they are free to move in all directions colliding with one another and the walls of their container.

When pressure is applied to them, they get compressed and takes up the shape of any vessel they are in.

Gases are the only compressible state of matter.

Learn more:

Gas laws brainly.com/question/2438000

#learnwithBrainly

Akimi4 [234]3 years ago
6 0

B)

is the right!!! on USA test PREP

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Three 5-l flasks, fixed with pressure gauges and small valves, each contains 4 g of gas at 273 k. flask a contains h2, flask b c
Varvara68 [4.7K]
First, please check the missing part in your question in the attachment.
a) So first, the Rank of pressure:
according to this formula PV = nRT and when n = m/Mw
PV = m/Mw * R*T
when we have the same mass m and the same V volume so P will proportional with the mole weight M as when the M is smaller the pressure will be greater 
when Mw of H2(A) = 2 g / Mw of He (B) = 4 g and Mw of CH4(C) = 16 g
∴ Pressure :
 (A) > (B) > (c)

B) The rank of average molecular kinetic energy:
when K = 3/2 KB T
when K is the average kinetic energy per molecule of gas 
and KB is Boltzmann's constant
and T is the temperature (K)
So from this equation, we can know that K only depends on T value, and when we have the T constant here for A, B, and C So the rank of K will be like the following:
∴ A = B = C
C) the rank of diffusion rate after the valve is opened:
according to this formula:
R2/R1 = √M1/M2
from this equation, we can see that diffusion is proportional to the reciprocal of the molecular mass M so,
when Mw H2 (A) = 2 g & Mw He(B) = 4 g & CH4 (C) = 16 g
∴ the rank of diffusion:
A > B > C

D) The rank of the Total kinetic energy of the molecules:
when we have the Mw different so it will make the no.of molecules differs as when the Mw is low the no.of molecules will be hight, and when the average molecular kinetic energy equals. so the total kinetic energy will depend on no. of molecules 
∵ Mw A < Mw B < Mw C 
∴no .of molecules of A > B >C
∴ the rank of total kinetic energy is:
A > B > C

e) the rank of density:

when ρ = m/ v 
and m is the mass & v is the volume and we have both is the same for A, B, and C
so the density also will be the same, ∴ the rank of the density is:
A = B = C

F) the rank of the collision frequency:
as the no.of molecules increase the collision frequency increase and depend also on the velocity and it's here the same.
∴ Collision frequency will only depend on the no.of molecules
we have no.of molecules of A > B > C as Mw A < B < C 
∴the rank of the collision frequency is:
A > B > C 

 



7 0
3 years ago
Which substance is not capable of acting as an arrhenius acid in aqueous solution
olga2289 [7]

Answer:

SO3 2- which is sulfite

i have to put this because it doesnt let me send the answer like that :)

3 0
3 years ago
Which of the following describes a synthesis reaction?
Grace [21]

Answer:

D. Two reactants combine to form one product

Explanation:

The definition of synthesis in chemistry is "the production of chemical compounds by reaction from simpler materials."

A is decomposition, B is DOUBLE replacement, and C is SINGLE replacement.

7 0
4 years ago
Fe + H2SO4 = Fe2(SO4)3 + H2
a_sh-v [17]
C (667) that’s the answer boiii
5 0
3 years ago
Which of the following tools is not used for measurement?
Verdich [7]

Answer:

tape measure

Explanation:

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