A biocompatible titanium alloy is formulated specifically for use in orthopaedic joint replacements.
Table 1 shows the masses of the metals present in a sample of this alloy.
| Metal | Mass (g) |
|---|---|
| Titanium | 184.2 |
| Niobium | 43.5 |
| Zirconium | 15.8 |
| Tantalum | 6.5 |
What name is given to a mixture that has been designed as a useful product?
Calculate the percentage by mass of niobium in this sample of the alloy. Give your answer to 1 decimal place.