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Lithium boron hydride crystallizes in an orthorhombic system with 4 molecules per unit cell.

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Lithium boron hydride crystallizes in an orthorhombic system with 4 molecules per unit cell. The unit cell dimensions are a = 6.8 Å, b = 4.4 Å and c = 7.2 Å. If the molar mass is 21.76, calculate density of crystal.

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= 0.6709 gm/cm3.

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