Sara's mom takes the parkway to work. it takes her 30 minutes to travel from mile marker 88 where she enters to her exit at mile marker 121. what is her average speed?

4.0 mph

16.5 mph

33 mph

66 mph

Classify this reaction: 2al+n2-> aln.

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.

The diagrams to the right show the distribution and arrangement of gas particles in two different containers. according to kinetic-molecular theory, which of the following statements is true? check all that apply. if the temperatures of both containers are equal, container a has greater pressure than container b. if the volume of container a decreased, its pressure would decrease. if the pressure in both containers is equal, container a has a lower temperature than container b.