The anwser is c make sure you read the anwser before me.
speed of 5,000 meters per second?
Answer:
Period T = 0.1 second
Explanation:
Given that the
wavelength = 500 meters
speed V = 5000 meters per second
The wave speed is the ratio of wavelength to period of the wave. That is,
V = λ/T
Where
V = wave speed (m/s)
λ = wavelength (m).
T = period (s)
Using the formula above gives
5000 = 500/T
Make T the subject of formula
T = 500/5000
T = 0.1 s
B.) Solid sodium chloride is a good conductor of electric current.
C.) Sodium chloride has a low melting point.
D.) Liquid sodium chloride is a good conductor of electric current.
NaCl solutions are electrically conductive because they are a powerful electrolyte in which the constituent ions completely separate, resulting in free-moving ions in the solution.c Thus, option D is correct.
The ions (Na+& Cl) are free to move around and can thus function as charge carriers, since the motility of individual atoms or molecules in liquid state is significantly larger than that of solid state. Because of the free ions, molten sodium chloride is a good conductor of electricity.
The charged particles (ions) in solid “[NaCl]” cannot move because they are bound by powerful electrostatic forces, making it a poor conductor of electricity. They cannot conduct electricity as a result.
Therefore, NaCl solutions are electrically conductive because they are a powerful electrolyte in which the constituent ions completely separate, resulting in free-moving ions in the solution.
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D. because sodium chloride is an ion
first of all , sodium chloride is salt and we all know that it is not malleable.
sodium chloride is an ion which do conduct electricity but not when they are solid.....they only do so when they are molten or aqueous ( dissolved in water )
sodium chloride is an ion. ions have high melting points.
D is true because as i have mentioned above , ions will conduct electricity when dissolved in water / aqueous or molten.......... HOPE IT HELPED !!!!!!