The pH of a strong base is closest to
A. 2.
B. 6.
C. 9.
D. 12.
D. 12.
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Polar covalent bonds:
A. can result in molecules having an electric dipole moment. B. can result in molecules having separated positive and negative charges. C. will not be present in nonpolar molecules. D. occur when the electrons in the bond are shared between the atoms but biased toward one atom in the bond. E. All of these choices are correct.
Because of the atomic structure of carbon, it tends to form
a. covalent bonds. b. ionic bonds. c. hydrogen bonds. d. sulfide bonds. e. bonds only with hydrogen.
DNA barcoding:
A: is a type of reverse genetics. B: is the most commonly used type of DNA fingerprinting used by the FBI. C: attempts to provide a unique sequence identifier for all life forms. D: is based mainly on repetitive DNA. E: is used for prenatal genetic screening.
Hydrogen bonding causes ice to be ________ dense than liquid water.
Fill in the blank(s) with the appropriate word(s).