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) ?

In the reactants there is a curvy arrow, what does the direction of the arrow indicate? A. because cations are sharp and anions are dull B. because the anions and cations share electrons C.

Which molecule has the greatest difference in electronegativity (DE) between the two different elements? A. CO_2 B. H_2S C. NH_3 D. H_2O

How do halogens differ from noble gases?

Which situation would encourage competition

Which phrase describes members of the domain Eukarya, but does not describe any members of Bacteria or Archaea? are multicellular are unicellular have cell walls have a cell membrane

An aqueous solution is 0.387 m in hcl. what is the molality of the solution if the density is 1.23 g/ml?

Carbon monoxide reacts with oxygen to form carbon dioxide. 2 CO (g) + O2 (g) → 2C02 (8) In a 1.00 L flask, 3.40 atm of CO reacts with 2.60 atm of O2. Assuming that the temperature remains constant, what is the final pressure in the flask? 4.30 atm 2.

The nerves that Branch out from the spinal cord and connect to the body

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Which kelvin temperature is equivalent to 20°C