How many grams of f are in 405 grams of caf2?

197 grams

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number of particles.

To calculate the moles, we use the equation:

Given mass = 405 g

Molar mass = 78.07 g/mol

1 mole of contains = 2 moles of fluorine

5.19  mole of contains = of fluorine

Mass of flourine =

Thus 197 grams of F are in 405 grams of .

explanation: it gains negative electrons, therefore becoming negatively charged. as charge cannot be created, nor destroyed, only transferred, this leaves the wool positive. now that they have opposite charges, the two items attract.

geosphere and hydrosphere.

this is because the geosphere has to do with geological events, while the hydrosphere controls all water on earth.