| Parts Per Million | Answer | % Correct |
|---|---|---|
| 56,300 | Iron | 88%
|
| 461,000 | Oxygen | 88%
|
| 1,400 | Hydrogen | 85%
|
| 23,600 | Sodium | 82%
|
| 82,300 | Aluminium | 79%
|
| 41,500 | Calcium | 76%
|
| 23,300 | Magnesium | 76%
|
| 20,900 | Potassium | 73%
|
| 282,000 | Silicon | 64%
|
| 5,650 | Titanium | 24%
|