Stars can be classified into groups based on their

a) size

b) temperature

c) proximity to earth

d) proximity to the sun

The radius of an atom is closes to

How many moles of sulfur are present in 2.7 moles of al2 (so4) 3

Which phrase is an example of what electrostatic forces hold together? A. Fr atoms and localized in iron B. He atoms in helium gas C. oxygen and hydrogen atoms in OH- D. Na + and Br - in NaBr I'm not sure about this one.

Boyle's Law for gases is: a. true for all gases only accurate at room temperature b. just a model and therefore accurate for no real gas c. accurate for most gases in most temperature ranges d.

Briefly define weather, season and Climate.

Ollie wants to sign up with an online social network called TeensMeet, which other kids at school have joined.

7. A perfect cube has a width of 2 cm. What is the cube's volume? Show your work!

Predict at least two circumstances (outside influences) that would cause a system in equilibrium to change the concentrations of its reactants or products.,

How many atoms are there in 2.3 grams of H?

Which of the following would dissolve in water, and why? None of these substances would dissolve in water Candle wax, it is a nonpolar substance Motor oil, its primary IMF is London Dispersion Forces Acetic acid, it ionizes into ions when added to