Which statement best describes ultraviolet waves? They are higher energy than X–rays. lower energy than microwaves. higher energ
2 answers:
Answer: higher energy than visible light. l
Explanation:
Electromagnetic wave is defined as the wave which is associated with both electrical and magnetic component associated with them. They can travel in vacuum as well and travel with the speed of light.
The Electromagnetic spectrum involves gamma rays , X rays, ultra violet rays, visible rays, infrared rays, micro waves and radio waves which are arranged in order of increasing wavelength and decreasing frequency.
The relationship between energy and wavelength of the wave follows the equation:
where,
E = Energy of the wave
c = speed of light
= wavelength of the wave
From the above relation, it is visible that wavelength and energy follow inverse relation. Thus the order of decreasing energy for waves is gamma rays , X rays, ultra violet rays, visible rays, infrared rays, micro waves and radio waves.
You might be interested in
Answer : The boiling point of the resulting solution is,
Explanation :
Formula used for Elevation in boiling point :
or,
where,
= boiling point of solution = ?
= boiling point of water =
= boiling point constant =
m = molality
i = Van't Hoff factor = 1 (for non-electrolyte)
= mass of solute (sucrose) = 5.0 g
= mass of solvent (water) = 10.0 g
= molar mass of solute (sucrose) = 342.3 g/mol
Now put all the given values in the above formula, we get:
Therefore, the boiling point of the resulting solution is,
Answer: 0.0450 moles of
Explanation:
According to avogadro's law, 1 mole of every substance weighs equal to its molecular mass and contains avogadro's number of particles.
To calculate the moles, we use the equation:
Thus there are 0.0450 moles of