Calculate the molar mass of an element with density $$2.7 \mathrm{~g} \mathrm{~cm}^{-3}$$ that forms fcc structure. $$\left[\mathrm{a}^3 \cdot \mathrm{N}_{\mathrm{A}}=40 \mathrm{~cm}^3 \mathrm{~mol}^{-1}\right]$$
- A$$112 \mathrm{~g} \mathrm{~mol}^{-1}$$
- B$$54 \mathrm{~g} \mathrm{~mol}^{-1}$$
- C$$27 \mathrm{~g} \mathrm{~mol}^{-1}$$
- D$$78 \mathrm{~g} \mathrm{~mol}^{-1}$$
✓ Correct answer: C
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