What is the mass of 5.4 moles of copper?

Light is described as a wave and sometimes as a particle. What evidence supports the wave nature of light? (A couple sentences will do)

Gas molecules have very weak intermolecular bonds. True False

True or False: The tundra and taiga are known as cold biomes.

An increase in a sound's pitch corresponds to an increase in what other property?

What is the strength of the beam in currituck beach lighthouse?

Two identical objects are moving directly toward one another at the same speed v. ~v - ~v m m What is the total kinetic energy of the system of the two objects?

Why would a long series of gradual ramps be better than one short, steep ramp for moving heavy blocks of stone?

Why are some liquids more viscous than others?

If a person weighs 125 lbs, 8oz., how many mg does s/he weigh

An iron rod is: A:a good conductor of heat and electricity, but not magnetic B: magnetic and a good conductor of heat, but is an insulator of electricity C: magnetic and a good conductor of heat and electricity D: not magnetic and an insulator of