1 Flourine 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(g) + Ca(s) ---> CaF20)
F2(g) + Na(s) ---> NaF20)
F2(g) + Na(s) ---> NaF21s)
F2(g) + Ca(s) ---> CaF2(s)

The answer is 323 g.

Hope the image of the frequency formula

The answer to the question: choose the correct statement.  a) when ethane reacts with fluorine gas the product is less stable.b) addition reactions of unsaturated hydrocarbons and halogens requires a high activation energy.  c)the double covalent bond within unsaturated hydrocarbons requires a lot of energy to break.  d)the double covalent bond within unsaturated hydrocarbons can be broken easily.is: a) when ethane reacts with fluorine gas the product is less stable.

Ithink that one is (c)