A 1000 ML Sample of 0

question 148

Multiple Choice

A 100.0 mL sample of 0.10 M NH₃ is titrated with 0.10 M HNO₃.Determine the pH of the solution after the addition of 200.0 mL of HNO₃.The K_b of NH₃ is 1.8 × 10^-5.

• A) 6.44
• B) 1.48
• C) 2.00
• D) 12.52
• E) 12.00

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Definitions:

Mobile Genetic Elements

Pieces of DNA that can move or be transferred from one location in the genome to another, affecting gene expression and evolution.

Plasmids

Circular, double-stranded DNA molecules found in bacteria and some yeasts, separate from chromosomal DNA, used in genetic engineering.

Prophage DNA

The DNA of a temperate bacteriophage that is integrated into the bacterial host's genome and replicates along with it without causing lysis.

Botulism Disease

A potentially fatal illness caused by botulinum toxin, produced by the bacterium Clostridium botulinum, affecting the nervous system.