Asked by Maria
                 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)??
            
            
        What is the color a mixture of sodium and potassium compounds (use the cobalt glass)??
Answers
                    Answered by
            DrBob222
            
    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? 
    
                    Answered by
            Maria
            
     yes , i did . but i  don't sure . thank you
    
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