Ammonia Reacts with Diatomic Oxygen to Form Nitric Oxide and Water

question 98

Multiple Choice

Ammonia reacts with diatomic oxygen to form nitric oxide and water vapor: 4NH₃ + 5O₂ $\rarr$ 4NO + 6H₂O
When 20.0 g NH₃ and 50.0 g O₂ are allowed to react, which is the limiting reagent?

• A)NH₃
• B)O₂
• C)NO
• D)H₂O
• E)No reagent is limiting.

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Definitions:

Gene Expression

The process by which information from a gene is used to synthesize a functional gene product, often a protein.

DNA Base Sequences

The order of nucleotide bases (adenine, thymine, cytosine, and guanine) in a DNA molecule that determines genetic information.

Gene Frequencies

The ratio of a particular allele to the total of all other alleles of the same gene in a given population.

Evolution

A change in gene frequencies within a population over many generations; a mechanism by which genetically influenced characteristics of a population may change.