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Chapter 2: Problem 31

Identify the following as elements or compounds: \(\mathrm{NH}_{3}, \mathrm{~N}_{2}, \mathrm{~S}_{8}, \mathrm{NO}, \mathrm{CO}, \mathrm{CO}_{2}, \mathrm{H}_{2}, \mathrm{SO}_{2}\)

Short Answer

Expert verified
The identified elements are \(N_2, S_8, H_2\) and the identified compounds are \(NH_3, NO, CO, CO_2, SO_2\).

Step by step solution

01

Identify elements

Elements consist of only one type of atom. Identify the chemical formulas that consist of only one type of atom, i.e., formulas where the only variation is the number of atoms (subscript in the formula). Only \(N_2, S_8, H_2\) contain single types of atoms, so they are elements.
02

Identify compounds

Compounds consist of different types of atoms chemically bonded together. The remaining chemical formulas represent compounds, which are \(NH_3, NO, CO, CO_2, SO_2\). These formulas contain more than one type of atom, therefore, they are compounds.

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Most popular questions from this chapter

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.

Some compounds are better known by their common names than by their systematic chemical names. Consult a handbook, a dictionary, or your instructor for the chemical formulas of these substances: (a) dry ice, (b) table salt, (c) laughing gas, (d) marble (chalk, limestone), (e) quicklime, (f) slaked lime, (g) baking soda, (h) milk of magnesia.

What are 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) \(\mathrm{P}_{4} \mathrm{O}_{10},(\mathrm{e}) \mathrm{B}_{2} \mathrm{H}_{6}\)

Write the molecular formula of ethanol. The color codes are: black (carbon), red (oxygen), and gray (hydrogen).

(a) Which elements are most likely to form ionic compounds? (b) Which metallic elements are most likely to form cations with different charges?
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