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) ?

A particular device uses electromagnetism by using electricity to move magnets. The magnets in this device are then used to do work. Which device uses electromagnetism in this way?

The number of valence electrons in an atom that has an atomic number of 13 is

In the lungs, oxygen diffuses into the blood and is loaded onto hemoglobin for transport. In the tissues, oxygen is unloaded from hemoglobin and diffuses from the blood into nearby cells.

An ice skater at rest pushes against a sled at rest, causing both the skater and sled to move away from each other with different accelerations. This is an example best described by Newton's First Law Newton's Second Law Newton's Third Law Answer

Does a solution have to involve a liquid? Explain your answer

What is the concentration of a solution containing 1.11 g sugar (sucrose, C12H22O11, MW = 342.3 g/mol, d = 1.587 g/cm3) in 432 mL glycerine (C3H8O3, MW = 92.09 g/mol, d = 1.261 g/cm3) in molarity and molality.

What's the name of a wave moving along a line?

Does the energy in a solid increase or decrease when changing to a liquid?

Is iron a substance or mixture?

How can scientists study the composition of distant stars?