Four liquids were poured on top of each other in a glass, and the liquids separated into four different layers. Which liquid had the lowest density?

Which of ther following is the best example of a closed system?

The fully hydrated form of sodium sulfate is the decahydrate, Na2SO4 • 10H2O. When heated the hydrated salt loses water.

Use this diagram of an animal cell to answer the question. Where does the second stage of cellular respiration occur? w x y z

In which orbital does an electron in a bromine atom experience the smallest?

A form of energy that is stored in a stretched rubber band is called

Rocks formed by changes in heat and pressure or the presence of hot

Both equation I and II are balanced, but equation II is the correct way to write the balanced equation. Why do you think this is? (Hint: Think fractions.) I) 2 SnO2 + 4 H2 → 2 Sn + 4 H2O II) SnO2 + 2 H2 → Sn + 2 H2O

What technology did mackinnon use to discover the structure of the potassium ion channel?

Both equations I and II are balanced, but equation I is the correct way to write the balanced equation.

Which of the following energy sources are in some way divided from the sun (select all that apply) A. Geothermal B. Nuclear C. Wave D. Biomass