Answer:

Step-by-step explanation:

As given in the question that methane(
) is taken excess amount
mass of
depend only on mass of fluorine
mass of
=180 g
mole of
=
=9.47
3 mole of
gives 1 mole of

so 1 mole will give
mole of

therefore,
9.47 mole of
will give
mole of

