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| 1. |
Molecular mass of cu2s whole twice |
| Answer» BRAINLIEST for the answer....FORMULA USED to CALCULATE molecular mass is No. of ATOMS × Atomic mass of element Cu2s = 2 × 63.546 + 1 × 32.065 = 127.08 + 32.065 = 159.157 u Mark as brainliest and follow | |