How many atoms of fluorine are present in a molecule of carbon tetrafluoride?

4 atoms.

Explanation:

1 atom of C and 4 atoms F.

So, a molecule of carbon tetrafluoride contains 4 atoms of flourine.

i believe it is c.) 1575 j.

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer