Stoichiometry help Hydrogen and oxygen react under a specific

set of conditions to produce water according

to the equation

2 H2(g) + O2(g) −→ 2 H2O(g).

How much hydrogen would be required to

produce 3.9 mol of water?

Answer in units of mol.

Match the vocabulary terms to their definitions. 1 . a long, chain-like set of molecules made up of repeating units joined end to end polymer 2 . a hard, brittle, heat- and corrosion-resistant material made by subjecting a nonmetallic mineral mixture to intense heat ceramic 3 . a plastic with low elongations that cannot be recycled thermoset 4 . a carbon fiber embedded in a polymer resin matrix thermoplastic 5 . a plastic with high elongations that can be recycled crystal 6 . a solid form resulting from the arrangement of atoms, ions, or molecules in definite geometric patterns composite