The intermolecular force(s) responsible for the fact that CH4 has the lowest boiling point in the set is/are _________. CH4,  SiH4,  GeH4,  SnH4 A. hydrogen bonding B. dipole-dipole interactions C. London dispersion forces D. mainly hydrogren bonding but also dipole-dipole interactions E. mainly London-dispersion forces but also dipole-dipole interactions Periodic Table with New Elements-1.pdf

Which one of the following materials has the highest coefficient of thermal expansion? 

What can the results of the Brinell and Rockwell tests on metals be used for?

This is continuation of the previous question. What is the stress in the steel bar when the temperature decreases to 0 °C?

31. New Manifest DestinyA. American moral responsibility to lead in the regeneration of the world and uplift savages and senile people.B. The orthodox theory that attributed social inequality to natural selection.C. Advocated the creation of commercial and naval fleets plus overseas territorial acquisitions in the Pacific.D. The suppression of antiwar sentiment during World War I prohibiting the obstructing of military recruiting, and making “false statements” that hurt the war effort.E. Outlawed disloyal, profane, or abusive language intended to disrepute or cause contempt to the government, Constitution or flag, enemy, or causing insubordination in the armed forces.F. A concept that God destined the United States to govern all of North America and beyond.

7. To ensure public support for involvement in World War I the federal government approved all of the following except  A. Sedition Act.  B. Committee on Public Information. C. Espionage Act.  D. Dollar Diplomacy.

If the federal reserve raises the discount rate, then this will

22. Radio became a very popular communication medium during the 20s and 30s.

45). Phenotype is the observable or measurable features of an individual. 

48). Which of the following terms best describes this “alleles of different genes are distributed independently of one another”.