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Fluorine gas is placed in contact with calcium metal at high temperatures to produce calcium fluoride powder. What is the formula equation for this reaction?
○ F2(I) + Na(s) > NaF 2(s)
○ F2(g) + Ca(s) > CaF2(I)
️ triangle
○ F2(g) + Na(s) > NaF 2(I)
️ triangle
○ F2(g) + Ca(s) > CaF2(s)
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