How can two compounds with the same chemical composition have different densities?

Do you think you could identify a mystery substance using only its mass or weight? Explain your answer.

When the lymphocytes are overwhelmed by a large amount of pathogens, what is the result? a. Lymph glands become swollen. b. More lymphocytes are released. c. The patient develops a fever. d. Phagocytosis is initiated.

Name 2 materials that are good conductors

Which statement correctly describes the relationship between frequency and wavelength? O As the frequency of a wave increases the longer its wavelength is. O As the frequency of a wave increases the shorter its wavelength is.

he calculation of kinetic energy uses the formula, KE = 1 2 mv2. Identify the unit that is required for mass and velocity, respectively, to determine the kinetic energy in Joules.

The characteristics that follow are characteristics of two of Galileo's surviving double-convex lenses. The numbers given are magnitudes only; you must supply the correct signs. L 1: front radius 950 mm, rear radius 2700 mm, refractive index 1.

Which car has the most kinetic energy? A car of mass 1500 kg with speed 5 m/s or A car of mass 1300 kg with speed 3 m/s or a car of mass 1200 kg with speed 2 m/s or a car mass 1400 kg with speed 4 m/s

A 500 kg table with 4 legs rests on solid flat ground. I place 3 books on the center of the table with masses of 10 kg, 20 kg and 30 kg respectively. What is the normal force between the ground and one leg of the table?

Fluorine-21 has a half-life of approximately 5 seconds. What percentage of the original nuclei would remain after 20 seconds

Which of these is an example of a totalitarian regime A.) Canada under prime minister Trudeau's rule B.) the Soviet Union under Josef lo