How Many Molecules of N₂ Are in a 400

question 74

Multiple Choice

How many molecules of N₂ are in a 400.0 mL container at 780 mm Hg and 135°C?

• A)7)01 × 10^{21 molecules}
• B)7)38 × 10^{21 molecules}
• C)2)12 × 10^{22 molecules}
• D)2)23 × 10^{22 molecules}

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Definitions:

Amoebozoa

A phylum of single-celled organisms characterized by their amoeboid movement and feeding by phagocytosis.

Excavates

A group of unicellular organisms, many of which are flagellates, that includes both free-living and parasitic species.

Ciliates

A group of protozoans characterized by the presence of hair-like structures called cilia used for movement and feeding.

Actinopods

A group of protozoa characterized by long, slender pseudopodia used for catching food and locomotion.