The melting point of copper is 1084°C. How does the energy of the particles in a certain amount of liquid copper compare to the
2 answers:
Explanation:
As it is given that melting point of copper is . So, it means liquid state of copper will exist at a temperature greater than
.
Whereas, it is known that liquid state of water exists at above zero degree celsius.
And, kinetic energy of the particles of a substance is directly related to the temperature as follows.
K.E =
Hence, more is the temperature of a substance more will be the kinetic energy of its molecules.
Therefore, temperature of liquid copper is more than the temperature of liquid water.
Thus, we can conclude that the energy of the particles in a certain amount of liquid copper is greater than the energy of the molecules in the same amount of liquid water.
You might be interested in
Explanation:
1.
Given parameters:
Frequency of the radiation = 8.4 x 10¹⁴Hz
Unknown:
Energy of the wave = ?
Solution:
The energy of a wave is given by the expression below;
E = hf
E is the energy
h is the Planck's constant = 6.63 x 10⁻³⁴m²kg/s
f is the frequency
Now insert the parameters and solve;
E = 6.63 x 10⁻³⁴m²kg/s x 8.4 x 10¹⁴Hz
E = 5.57 x 10¹ x 10⁻²⁰J
E = 5.57 x 10⁻¹⁹J
2.
Given parameters:
Wavelength = 2.13 x 10⁻¹³m
Unknown:
Frequency of the wave = ?
Solution:
The frequency of a wave can be determined using the expression;
C = f∧
C is the speed of light = 3 x 10⁸m/s
f is the frequency
∧ is the wavelength
f = =
= 1.41 x 10²¹hz