Answer:
energy = 391.902 kJ /mol
Explanation:
given data
wavelength = 305 nm = 305 × m
to find out
average energy
solution
we know speed of light is 3 × m/s
so we find frequency here first by speed of light formyla
speed = wavelength × frequency
3 × = 305 × × frequency
frequency = 9.8360 ×
so energy is
energy = hf
here h = 6.62 × J-s
so
energy = 6.62 × × 9.8360 ×
energy = 6.51 × J
so
energy = 6.51 × × kJ/mol
energy = 391.902 kJ /mol
Answer:
1. Some molecular substances are electrolytes
Explanation:
Electrolytes are electrically conducting solutions when dissolved in water and are found in cells .
In this case , all molecular substances can’t be electrolytes
Not all electrolytes are ionic. They could be ionic or covalent.
A strong electrolyte is known for its complete ionization in water and not for anything partial.
Answer:
Displacement is the distance between an object’s initial position and its final position and is usually measured or defined along a straight line. Since this is a calculation that measures distance, the standard unit is the meter (m).
Explanation:
Answer:
The answer is a) The red side is on the right, the violet side on the left and d) The red side is farthest from the center of the screen, the violet side is closest to the center
A rainbow drawing is attached to the attached file.
Explanation:
A rainbow is an optical and meteorological phenomenon that consists of the appearance of a multicolored arc of light, originated when sunlight is broken down into the visible spectrum. It is an arc composed of an arc of colors, with red towards the outside (angle of incidence of 42°) and violet towards the inside (angle of incidence of 40°).