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What is the temperature of the corona

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Question- The corona of the sun emits a spectral line at about 677 m due to the presence of an ionized 57Fe atom (molar mass of 0.0569 kg mol^-1). If the line has a width of 0.053 nm, what is the temperature of the corona?

I just need a general explanation of it please- Thanks

Reference no: EM13689211

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