because it is the wave lenght where the maximum absorbtion take place by the solution cantaning cupper
it can never be spontanious
Around 620 nm
Helium or He, is one of the elements on the periodic table of elements. It is made of two protons, two neutrons and two electrons, it is also a noble gas. Since helium is an element and not a compound it is made of atoms not of other elements.answ2. The daily warmth we receive from the Sun is due to the fusion of Hydrogen into Helium. Around 620 million tonnes per second!And in a super nova, when three Helium nuclei almost simultaneously fuse to form a carbon atom, at a temperature of 100 million Kelvin. All our carbon was thus made.[Temperature may be measured as the velocity of a free particle.]
The boiling point of water drops by approximately 1 degree Fahrenheit for every 550' of elevation gain above sea level (ASL). So the boiling point of water at 6000' ASL would be around 93.8 degrees Celsius or 201 degrees Fahrenheit.
620 grams mercury (1 mole Hg/200.6 grams) = 3.09 moles Hg
620 grams = 1.37 pounds
Just multiply..... 620 grams x .0353 = 28.9 ozs
620/200= 3.1
it depends what you are measuring i think.... physics grade 10....lol
44.01
620 kilograms = 97.63 stone
620 meters=0.385250139 miles
620 PM -- 40 minutes 620 AM -- 12 hours, 40 minutes
The answer depends on the units used for 620. It should be patently obvious that 620 feet is considerably less than 620 light years!
620 meters rounds to about 0.39 miles.
620 cm = 20.341 feet (rounded)