Which of the following is evidence that the continents were once part of a supercontinent called Pangaea?

Deep ocean trenches

Mid-ocean ridges

Island Arcs

Glacier scrapings

When molecules collide with the walls of their container, is exerted pressure stress gravity friction

Green light has a frequency of 6.01 x 10^14 Hz. What is the wavelength?

Why is coal not a mineral? It does not have a regular composition. It does not occur naturally. It is organic. It is not a solid.

A student is conducting an experiment to determine how cold temperatures affect the growth of tadpoles in a tank of water.

A chemical reaction produces solid sulfur as a product. Which unit should be used to describe the mass of the sulfur produced?

Which laws can be combined to form the ideal gas law? Boyle's law and Charles's law Gay-Lussac's law and Avogadro's law Charles's law, Avogadro's law, and Boyle's law Dalton's law, Gay-Lussac's law, and Avogadro's law

What determines the horizontal arrangement of the periodic table?

A 55.3 g sample of lead heated and then quenched in a 175g sample of water. During the quenching reaction the temperature of the water increases from room temperature, 25.0 °C, to 42.6 °C.

What conclusion can you draw from this experiment about the components of the black ink

How does the size of ions affect the conductivity of a solution?