?An intermolecular interaction in which molecules or portions of molecules exhibit polarity is known as a(n) ____.
A. ?Van der Waals force
B. ?dipole interaction
C. ?hydrogen bond
D. ?ionic bond
Answer: B
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Technician A says that HEV refrigerant service uses the same RRR machine as any other vehicle. Technician B says that a hybrid-specific RRR machine is used to service HEV systems. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
Using the data for the azeotropic mixture, calculate the values of A12 and A21 for the 2-parameter Margules equation.
A pair of compounds identified as 1 and 2 have the following properties:
This pair of compounds forms an azeotrope at 350 K and P = 8.5 bar, with x1 = y1 = 0.31.
Three contingencies are usually applied to an elemental estimate at the conceptual stage. They include all of the following EXCEPT __________.
A. a design contingency B. an escalation contingency C. a construction contingency D. a disaster contingency
In the process of meiosis, chromosomes are divided so that each parent contributes ____ of the genetic material to the new organism
a. One-third c. Two-thirds b. One-half d. Three-fourths