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olga55 [171]
3 years ago
13

Is PCI3 a good conductor?

Chemistry
1 answer:
AVprozaik [17]3 years ago
5 0

Answer:

Since the ions cannot move, ionic solids are non-conductors of electricity. When the solid is melted to a liquid, however, the ions are free to migrate. Therefore, ionic liquids are good conductors of electric current. A conductor is a substance capable of transmitting electricity and/or heat.

Explanation:

:)

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Describe a procedure to separate a mixture of salt, sand, and water.
Gelneren [198K]
You could use a heat lamp to evaporate the water.
4 0
4 years ago
An electron in a hydrogen atom drops from energy level e3 to e2. what's the frequency of the emitted photon
castortr0y [4]
For this problem we can use 2 equations.
(1) - E = mC²
          E = Energy of photon (J)
          m = Mass of photon (kg) (1.67x10⁻²⁷ kg)
          C = speed of light (3 x 10⁸ m/s)

(2) - E = hf
        E = Energy of photon (J)
        h = plank's constant (6.63 × 10⁻³⁴<span>J s)
        f  = frequency of the photon (Hz)

(1) = (2)
hence, </span>mC² = fh                
                
by rearranging, 
                f =  mC² / h 
                f  =  1.67x10⁻²⁷ kg * (3 x 10⁸ m/s)² / (6.63 × 10⁻³⁴J s)
              f    = 2.27 x 10²³ Hz            
3 0
3 years ago
How do scientists know That the human activity is the major force behind climate change?
ziro4ka [17]

Answer:

It is because of Various things that we do, If we did not exist, several animals that went extinct because of us, would have thrived, If it wasn't for us filling the sky with so much CO2's, we wouldn't have the Earth heating up even more. Also, other things that we do such as Urbanization, Desertification, and Deforestation. All of these words will be defined under this text.

Explanation:

Deforestation: When humans cut down too many trees can result in habitat loss/ more CO2's

Desertification: When land used to be a grassland but humans used too much of a resource and turned it into a hot, sandy wasteland.

Urbanization: When you take land and fill it with tons of buildings, homes, and businesses. This can result in over-crowding, and spreading of diseases.

6 0
4 years ago
4. Evaluate the information contained in this calculation and complete the
Neporo4naja [7]

Since you did not give a calculation, I will just give an example. Suppose that you are to burn 5 kg of methane (CH4) from 0 to 10°C. The specific heat capacity of methane is 4.475 kJ/kg-K.

H = mCpT

H = (5kg)( 4.475 kJ/kg-K)(10-0)

H = 223.75 kJ

Because the enthalpy is positive in value, methane takes in heat. 

7 0
4 years ago
The difenition for glands
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A gland is an organ that excretes chemical fluids to discharge into the surroundings or for use in the body.

4 0
3 years ago
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