Well you would think yeah because it’s a liquid but the answer is no
Because the formation of rust is a kind of chemistry reaction.
After chemistry reaction, compound with new properties is produced.
Of course, color is one of the new properties.
For example, if you put iron in colorless acid solution, a green solution is made.
This kind of chemisty reaction differs from physical reaction, for example, pigment with one color dissolves in liquid, a liquid with same color is made.
<h2>Answer:</h2>
B) endothermic reaction.
<h2>Explanation:</h2>
Melting of ice is endothermic because it is taking heat from the environment, feeling cold, because it requires energy to break the ice bonds. It's also why you feel cold when wet it takes energy to evaporate water. The ice absorbs the energy from the environment. Its internal potential energy increases, therefore, it's endothermic. It also increases the entropy of reaction.
The answer is b because the autor in the passage said .
Answer : The wavelength of yellow light produced by a sodium lamp is, 
Explanation : Given,
Frequency of radiation = 
conversion used : 
Formula used :
where,
= frequency of radiation
= wavelength of radiation
c = speed of light = 
Now put all the given values in the above formula, we get:
Therefore, the wavelength of yellow light produced by a sodium lamp is,
