What Is the PH of a 0

question 13

Multiple Choice

What is the pH of a 0.35 M solution of methylamine (CH₃NH₂,K_b = 4.4 × 10^-4) at 25^oC?

• A)5.55
• B)0.46
• C)12.09
• D)13.54
• E)1.91

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Definitions:

Electrophoresis

A laboratory technique used to separate DNA, RNA, or protein molecules based on their size and electrical charge.

Nucleic Acid Probe

A nucleic acid probe is a segment of DNA or RNA labeled with a radioactive or fluorescent marker used to detect the presence of complementary sequences in DNA or RNA samples by hybridization.

Western Blot

A technique in which proteins, previously separated by gel electrophoresis, are transferred to paper. A specific labeled antibody is generally used to mark the location of a particular protein. Compare with Southern blot and Northern blot.

Bt Crops

Genetically modified crops that express toxins from the bacterium Bacillus thuringiensis, which are lethal to certain insect pests.