based on your previous experiences, list the following substances in order from the lowest density to the highest. explain your reasoning. lead pipe, water, pine 2" by 4" board, styrofoam peanuts

altitude, density, pressure

air gets less dense the higher the altitude and also the air pressure is less as altitude rises.

1. 1 mole of anything contains 6.022x10^23 pieces  

d  

2. a  

3. c, number  

5. 1.24x10^24atoms / 6.022x10^23atoms/mole = 2moles h2 atoms  

6. fe2br3 mass = 2moles x mass fe + 3 moles x mass br  

molar mass = grams / number of moles = g/mole  

to find moles = g / molar mass  

to find mass = g = molar mass / moles

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock