Question

How many grams of fluorine are contained in 8 molecules of boron trifluoride?

Answer 1

BF3

Answer 2

Yaayy its the mole train!
BF3,
meaning for every one molecule of boron, there are 3 fluorine molecules.
To go from molecules to grams, you first find the moles of BF3.
8 molecules x 6.02*10^23 (Avogadro's constant :])
=[ some number that idk because im having trouble operating a calculator like the idiot that I am]

You then have to know the molar mass of bf3 (you get from your periodic table).
Its 68 g/mol.
[ that number that you should have gotten] x 68 g/mol.

yeaaap. lol.

Answer 3

The answer is 7.572 x 10-22 g, however