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(0)+ Na(s) - NaF 2()
F2(g) + Ca(s) - CaF20)
F2(g) + Na(s)
Δ
NaF 200
F2(g) + Ca(s) 4, Caf 2(5)

In a sample of oxygen gas at room temperature, the average kinetic energy of all the balls stays constant. which postulate of kinetic molecular theory best explains how this is possible? a. attractive forces between gas particles are negligible because the particles of an ideal gas are moving so quickly. b. collisions between gas particles are elastic; there is no net gain or loss of kinetic energy. c. gases consist of a large number of small particles, with a lot of space between the particles. d. gas particles are in constant, random motion, and higher kinetic energy means faster movement.

Which is a character of nuclear fusion but not nuclear fission

0.2348 grams of pbcl2 used to form 44.0 ml of solution.