Percent Composition Calculate the percent composition of these unknowncompounds that are formed from these reactions. Send this file to me through the assignment function. 1. 60.2g of Hg combines...

PERCENTAGE COMPOSITION
1. 60.2g of Hg combines completely with 24.0g of Br.

Hg + Br2 HgBr
60.2g 24g 84.2g
Total mass of compound = 60.2g + 24g = 84.2g (law of conservation of mass)
% of Hg = (Mass of Hg / total mass of the compound) * 100
= (60.2 g/ 84.2g) *100= 71.50%
% of Br = (Mass of Br/ total mass of the compound) * 100
= (24/84.2)*100 = 28.50%
2. 0.219g of La reacts with Oxygen to form a compound with a mass of 0.256.g
La + O2 La2O3
0.219g 0.040g 0.256g
FROM LAW OFCONSERVATION OF MASS

Mass of oxygen = total mass of compound formed – mass of La = 0.256 – 0.219 =0.040g
% of La = (Mass of La/ total mass of the compound) * 100
= (0.216/0.256)*100 = 84.38%
% of O = (Mass of O/ total mass of the compound) * 100
= (0.040/0.256)*100 =15.63%
3. 0.875g of Al combines completely with 3.45g of Cl.
Al + Cl2 AlCl3
0.875g 3.45g 4.325g
% of Al = (Mass of Al/ total mass of the compound) * 100
= (0.875/4.325)*100 =20.23%
% of Cl = C
(3.45/4.325)*100 = 79.77%

4. 4.29g of C combines completely with 5.71g of O.
C + O2 CO2
4.29g 5.71g 10g
% of C = (Mass of C / total mass of the compound) * 100
= (4.29/10)*100 = 42.9%
% of O = (Mass of O / total mass of the compound) * 100
= (5.71/10)*100 = 57.1%
5. Carvone (responsible for the smell in caraway seeds) C10H14O
Total mass of C10H14O = 12*10+1*14+16 = 150 g/mol
% of C = Mass of C / total mass * 100
=...