Asample of a compound contains 3.21 g of sulfur and 11.4 g of fluorine. which of the following represents the empirical formula of the compound?
a. sf2
b. sf3
c. sf4
d. sf5
e. sf6

The empirical formula will be

Explanation:

If percentage are given then we are taking total mass is 100 grams.

So, the mass of each element is equal to the percentage given.

Mass of S= 3.21 g

Mass of F = 11.4 g

Step 1 : convert given masses into moles.

Moles of S =

Moles of F =

Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.

For S=

For F =

The ratio of S: F= 1: 6

Hence the empirical formula is

> b takes place in the gas phase in an isothermal tubular reactor. the feed is one mole of a per one mole of c, an inert. the entering temperature and pressure are 427°c and 10 atm, respectively. the gas constant r = 0.08206 atm · l/mol · k.