Elemental boron can be formed by reaction of boron trichloride with hydrogen. bcl3(g) + 1.5h2(g) -> b(s) + 3hcl(g) substance: bcl3(g) h2(g) b(s) hcl(g) s°(j/k•mol): ? 130.6 5.87 186.8 if ? s° = 80.3 j/k, what is s° for bcl3(g)?

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