Problem 72
What is the difference between inorganic compounds and organic compounds?
Problem 73
Give one example each for a binary compound and a ternary compound. (A ternary compound is one that contains three different elements.)
Problem 74
Explain why the formula \(\mathrm{HCl}\) can represent two different chemical systems.
Problem 77
Identify the following as elements or compounds: \(\mathrm{NH}_{3}\), \(\mathrm{N}_{2}, \mathrm{~S}_{8}, \mathrm{NO}, \mathrm{CO}, \mathrm{CO}_{2}, \mathrm{H}_{2}, \mathrm{SO}_{2}\)
Problem 78
Give two examples of each of the following: (a) a diatomic molecule containing atoms of the same element, (b) a diatomic molecule containing atoms of different elements, (c) a polyatomic molecule containing atoms of the same element, (d) a polyatomic molecule containing atoms of different elements.
Problem 79
Write the empirical formulas of the following compounds: (a) \(\mathrm{C}_{2} \mathrm{~N}_{2},\) (b) \(\mathrm{C}_{6} \mathrm{H}_{6},\) (c) \(\mathrm{C}_{9} \mathrm{H}_{20},\) (d) \(\mathrm{P}_{4} \mathrm{O}_{10}\) (e) \(\mathrm{B}_{2} \mathrm{H}_{6^{-}}\)
Problem 80
Write the empirical formulas of the following compounds: (a) \(\mathrm{Al}_{2} \mathrm{Br}_{6}\) (b) \(\mathrm{Na}_{2} \mathrm{~S}_{2} \mathrm{O}_{4}\) (c) \(\mathrm{N}_{2} \mathrm{O}_{5},\) (d) \(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) (e) \(\mathrm{H}_{2} \mathrm{C}_{2} \mathrm{O}_{4}\)
Problem 81
Write the molecular formula of alanine, an amino acid used in protein synthesis. The color codes are black (carbon), blue (nitrogen), red (oxygen), and white (hydrogen).
Problem 83
Name the following binary molecular compounds: (a) \(\mathrm{NCl}_{3}\) (b) \(\mathrm{IF}_{7}\) (c) \(\mathrm{P}_{4} \mathrm{O}_{6}\) (d) \(\mathrm{S}_{2} \mathrm{Cl}_{2}\)
Problem 84
Write chemical formulas for the following molecular compounds: (a) phosphorus tribromide, (b) dinitrogen tetrafluoride, (c) xenon tetroxide, (d) selenium trioxide.
