Question

Question #0ebb5

Answer 1

let us assume that we ave started with 100 g of compound and the compound on decomposition gives 67.62 g ( 67.62%) of Uranium and 32.38 g ( 32.38%) of fluorine.

Step II Calculate the number of moles of each element \

`n_U` = 67.62 g / 238 g `mol^-1`

`n_U` = 0.284 mol

`n_F` = 32.38 g / 19 g `mol^-1`

`n_F` = 1.70 mol

Step III ; Calculating the simple whole ratio

U = 0.284 / 0.284 = 1 and F = 1.70 / 0.284 = 6

the empirical formula is `U_1` `F _6` or U`F _6`