Molecules, Compounds, and Chemical Equations. Chapter 3. Molecular View of Elements and Compounds. Practice problems Tro – 3.27-3.32. P 4 , S 8 , and Se 8 are the polyatomic elements. Combining Elements to make Compounds. 2 H 2 + O 2 2 H 2 O
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Practice problems Tro – 3.27-3.32
2 H2 + O2 2 H2O
Propane – contains
Table salt – contains
an array of Na+ ions
and Cl- ions
Practice problems Tro – 3.55-3.56
Practice problems Tro –3.117-118, 3.129, 3.132
Practice problems Tro – 3.79-3.84
Practice problems Tro – 3.85-86, 3.89-92, 3.121-122
2 C8H18(l) + 25 O2 (g)16 CO2 (g) +18 H2O(g)
Pure silicon, which is needed in the manufacturing of electronic components, may be prepared by heating silicon dioxide (sand) with carbon at high temperatures, releasing carbon monoxide gas. Write the balanced chemical equation for this process.
Carbon tetrachloride was widely used for many years as a solvent until its harmful properties became well established. Carbon tetrachloride may be prepared by the reaction of natural gas (methane, CH4) and elemental chlorine gas in the presence of ultraviolet light. Write a balanced chemical equation for this process.
Practice problems Tro – 3.93-3.100
Practice problems Tro – 4.71-4.76, 4.79-4.82
Practice problems Tro –4.93-94