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)​

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

What is the main reason why some developing countries fear the increase the free trade policies around the world?

What amount of heat is exchanged when 106.2 grams of substance y goes from a liquid at 35 degrees celsius to a solid at the same temperature? melting point of substance y = 35 degrees c; δhvaporization = 3.67 j/mol; δhfusion = 3.30 j/mol. mwsubstance y = 28.22 g/mol. −12.4 j −3.51 x 102 j 1.24 x 101 j 351 j