Question

1. two sample of calcium fluoride are decomposed into their costituent elements. the first sample produced g of calicum and g fluorine. if the second sample produced 294 mg of fluorine how many g of calicum were formed ? show me the work.

2. tow sample of potassium iodine are decomposed into their constituent elements. the first sample produced 13.0 g of potassium and 42,3 g of iodine. if the second sample produced 24.4kg of potassium how many kg of iodine were produced? show me the work

Answer 1

Calcium fluoride is decomposed togives Calcium and fluorine

first sample calcium and fluorine ratio

Ca/F   = 1/1

in second sample calcium and fluorine

Ca/F   = X/294

from 1 and 2 samples

1/1 = X/294

X = 294mg ...>>>> answer

2.

potassium iodide decomposes to give K and and I

in first sample K and I ratio

K/I    = 13/42.3

seconsample K and I ratio

K/I = 24.4/X

from 1 and 2 samples

13/42.3 = 24.4/X

X      = 24.4*42.3/13 = 79.39 kg >>> answer