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What colour flame do you get when you burn copper chloride?
A bright green color is imparted to the flame by copper chloride
why is blue color more economical in flame?
When the flame takes on the color of blue this means that the fire is at the highest temperature. The fire is at its hottest and may take lesser time to heat whatever needs to be heated.
Which are more energetic photons of UV A radiation or photons of UV B radiation?
UVB
Which are more energetic photons of UV-A radiation or photons of UV-B radiation?
UV-B.
What color did you unknow produce in the flame and What is your unknow?
You are referring here to the "flame test" to identify an unknown substance by the color it produces in a flame. The test is more usefull in determining what the sample does notcontain, rather than what it does contain, since many substances will produce similar colors in a flame test.Manganese, for instance, will produce yellow-green, but so will molybdenum.Sodium will produce a bright yellow color which you have seen in sodium vapour lamps that are used along highways. Iron produces a gold color, and copper, a blue-green.There are many others.
Is the temperature of a luminous flame greater or less than that of a nonluminous flame?
a non-luminous flame- when the air hole of the Bunsen Burner is open"when the air hole is open, more oxygen can enter the burner; therefore, hotter flame will be produced."its color is transparent or blueBlue flames are the hottest flamesa luminous flame is produced when the air hole is closed.."if the air hole is closed, oxygen cannot enter the burner; therefore, least hotter because the combustion is not fully complete with least oxygenA luminous flame has an outer of orange color and an inner of blue.Luminous flames emits more light than non-luminous flames.three things to produce flame1.fuel2.oxygen3.friction or source of sparkLuminous objects emit light. The sun is luminous; the moon is non-luminous.
Light intensity is?
Light is composed of quanta called photons. The more photons, the greater the intensity. To see the slightest flicker of green light (the color to which our eyes are most sensitive), the minimum number of photons is six.
What is the Particle Theory of Heat Radiation?
Transmission of heat by radiation is due to the fact that bodies with a temperature higher than absolute zero emits photons (light) with a spectrum (distribution of energy among different color, considering also infrared, UV, X rays and so on) dependent on the body material constitution and on temperature. Remember that for photons a relationship exist between frequency (color) and energy: higher the frequency, higher the single photon energy. Thus higher the temperature higher the average emitted photon energy and higher the emitted spectrum average frequency. While emitting hot bodies slowly loose energy and cool. These photons are absorbed by other bodies, more and more efficiently while temperature of the absorbent bodies is lower and lower. When absorbed, they are transformed in heat again rising the temperature of the absorbent body. Thus, at the end, hot bodies preferentially emits photons and cool and cold bodies preferentially absorb photons and rise temperature.
Why do black clothes feel hotter than white clothes on sunny days?
Black clothes absorb more of the suns energy while white absorbs less. Since this energy is in the form of heat to us darker clothes feel hotter. EX) The sun emits photons of light. these photons have a characteristic wavelength to each color: blue green yellow red.....Black clothes absorb wavelengths of light from the sun that dont make up the black color, meaning they dont take in the black wavelength photons, just absorb the colors that dont make black color, like red and yellow. White clothes do not absorb any photons of the visible spectrum so they emit all the photons of light. Since they dont absorb the light energy from the sun they dont get as hot. But will still heat up but from the radiation of the sun.
What colour is the flame of copper sulphate when heated?
it is like the color but gold more
Why is the safety yellow flame important in the laboratory?
The yellow flame is called the safety flame because you can see it very well, whereas the blue flame emits very little light so it is not very easy to see. Therefore the yellow flame is called the safety flame because it emits the most light.
What is the color of the hottest star and why?
The hottest star is of blue color. The more the heat , the more is the excitement of electrons in star. This electrons vibrate with high frequency and emits light. Since the frequency is high, it appears as of blue color
What colour flame do you get when you burn copper chloride?
A bright green color is imparted to the flame by copper chloride
why is blue color more economical in flame?
When the flame takes on the color of blue this means that the fire is at the highest temperature. The fire is at its hottest and may take lesser time to heat whatever needs to be heated.
What is the difference between a yellow gas flame and a orange gas flame?
Well like with any flame, the lighter the flame, the higher the temperature of the flame. If the flam is burning Yellow, it is at a higher temperature and is burning more oxygen than an orange flame is. That is your difference other than the color.
How can you tell if there is too much air mixing with the gas in a Bunsen burner?
The more air the fiercer the flame and the hotter the flame.
Is observed red shift in the light emitted by galaxies the more distant the more red shift the only evidence to conclude that the universe is expanding. Any more evidences. If so what are they?
During the time a super-nova in a very distant galaxy emits light, the first photons it emits have a head start over the last such photons -- ie, they begin to leave earlier. As such, there exists a distance between the first photons and the last photons. If that super-nova occurred over a billion years ago, AND if space is expanding over time, then the distance between the first photons and the last photons will also expand during the billions of years it takes for that distant super-nova to reach us. Because the last photons from a distant super-nova have a greater distance gap than the last photons from a nearby super-nova, distant ones will seem to last longer than nearby ones. The difference in time between the first photons and the last photons from a distant super-nova, as opposed to those from a nearby super-nova, match perfectly with the expansion in space seen in red-shift. In addition, if spatial expansion has been (more or less) constant since the earliest moments of our Universe, then at one time our Universe was far more dense than it is now, and that, at some point, the density dropped to the point where protons and electrons would combine into atoms, photons would no longer be absorbed by atoms, such photons would then be free to travel (and expand their wavelength) for billions of years, and we should observe almost perfectly isotropic microwave radiation coming from all parts of the sky. That was predicted in 1946, and observed eighteen years later -- exactly as predicted.
