What are the amounts of molecules in 19 g flourine

molecules present in, 76 gram of fluorine

Explanation:

atomic weight of fluorine is 19 g per mole, molecular weight  is 38g per mole .

Therefore 76 gram fluorine contains 1976=4 gram atom

there is none because earth is stationary and flat.

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock