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what is the color a mixture of sodium and potassium compounds??
What is the color a mixture of sodium and potassium compounds (use the cobalt glass)??

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    A mixture of Na and K give a yellow color in the flame. The Na yellow flame completely blocks the violet from K. Using a Cobalt glass filters the yellow out and leaves a reddish color for K. Did you not see this when you did the experiment?

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    yes , i did . but i don't sure . thank you

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