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Diano4ka-milaya [45]
3 years ago
15

Pls help me its science

Chemistry
2 answers:
sdas [7]3 years ago
8 0

Answer:

particle arrangement of a solid = the particles are packed tightly together in a regular pattern.

particle arrangement of a liquid =  The particles in a liquid are loosely arranged

movement of a particle in solid = the particles do vibrate about their position in the structure

movement of a particle in a gas = The particles in a gas are moving very quickly in random directions

forces between particles in a gas = there are essentially no attractive forces between particles.

forces between particles in a solid = the attractive forces keep the particles together tightly enough so that the particles do not move past each other

compressibility of solid = Solids are non-compressible and have constant volume and constant shape.

compressibility of liquid = All liquids are compressible even water

compressibility of gas = The kinetic-molecular theory explains why gases are more compressible than either liquids or solids.

shape and volume of a solid = Solids have a definite shape and volume

shape and volume of a gas =  Gases have no definite shape or volume.

Explanation:

i.dk if its right but i hope it is :')<33 also brainliest plz?

weeeeeb [17]3 years ago
7 0

Answer: solids were liquds the form changes but it is still the same thing

Explanation:

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Answer:

c. Only certain energies are allowed for the electron in a hydrogen atom

Explanation:

Emission spectrum are produced when the excited electron in a atom release the energy in the form of photons to come to ground state. These photons are of different wavelengths depending on the excitation state of emitting electron or transition of electron. These electromagnetic radiation are observed through prism to produce the spectrum.

As the name indicates this spectrum is produced by emission of energy. Although the electron can be excited by different methods such as by heating but the key point is that electrons in hydrogen atom will emit the photons of same energy which they absorb and each electron can absorb only certain type of energy. So four lines were observed in the visible spectrum of hydrogen because only certain energies are observed for hydrogen atom.

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4 years ago
HELPPP!!! What is the volume of a 1.31 moles sample of gas if the pressure is 904 mmHg and the temperature is 37. degrees Celsiu
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Answer:

27.99 dm³

Explanation:

Applying

PV = nRT................ Equation 1

Where P = Pressure, V = Volume, n = number of mole, R = molar gas constant, T = Temperature.

From the question, we were aksed to find V.

Therefore we make V the subject of the equation

V = nRT/P................ Equation 2

Given: n = 1.31 moles, T = 37°C = 310K, P = 904 mmHg = (904×0.001316) = 1.1897 atm

Constant: R = 0.082 atm.dm³/K.mol

Substitute these values into equation 2

V = (1.31×310×0.082)/(1.1897)

V = 27.99 dm³

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