McqMate
| Q. |
The constituents of this material that is yttrium, barium and copper are in |
| A. | 1:1:1 |
| B. | 1:2:2 |
| C. | 1:2:3 |
| D. | 1:2:1 |
| Answer» C. 1:2:3 | |
| Explanation: the constituents of this material | |
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