1. 52.94% ALUMINUM; 47.06% oxygen
2. 72.40% iron; 27.60% oxygen
3. 52.0% zinc; 906% carbon; 38.4% oxygen
4. 60.98% arsenic; 39.02% sulfur
5. 74.17% mercury; 25.83% chlorine
6. 60.0% terbium; 40.0% chlorine
7. 65.1% scandium; 34.9% oxygen
8. 34.6% gallium; 17.8% carbon; 47.6% oxygen
9. A sample of potassium sulfate has the following composiotion:
17.96 g of potassium, 7.35 g of sulfur, 14.70 g of oxygen.
What is the simplest formula?
10. A pure sample of mercury oxide produced 20.3 g of mercury and 1.7 g of oxygen.
What oxide of mercury is this?
11. A certain sample of a barium salt contains 8.57 g of barium and 4.43 g of chlorine.
What is the simplest formula?