Post 4 Gas Laws

We did the airbag lab today that involved mixing baking soda and vinegar (5%) to produce CO2 in a bag. Starting this lab we found the volume of the bag by filling it with water before converting this amount (mL converted to L) into mols using the equation PV=nRT. After getting the mols, we used this number to find the grams of baking soda needed (stoichiometry) and the mL of vinegar needed (mols of vinegar x 20/1.05 [density]). After that, the lab was smooth sailing.

Post 3 Gas Laws

Other important laws include:
Charle's Law which involves temperature (in Kelvin) and Volume. It can be used in the equation V1T2 = V2T1.
*remember, when using temperature in Celsius, convert to Kelvin by adding 273.15
chemteam
 
Avagadro's Law uses volume and moles in a similar equation.
 Chemistry
chemteam

Finally, Combined Gas Law is a combination between Charle's Law and Boyle's Law using temp, pressure, and volume.
chemteam

Post 2 Gas Laws

Know certain laws that using different parts of the equation (P1V1)/T1 = (P2V2)/T2.
Boyle's Law leaves temp and mols constant while volume and pressure change.
nasa
khanacademy
Common units of pressure:

Post 1 Gas Laws

Characteristics of Gases:
- gases expand spontaneously to fill their container
- gases are highly compressible
- gases form homogeneous mixtures
- gas molecules are relatively far apart from one another and exert little influence on each other
chem4kids
purdue
And here's some extra details, just for fun.
mikeblaber
 

Post 2 Energy and Phase Changes

Here's some sources and practices.
youtube
youtube
hyperphysics
hyperphysics
boundless
boundless

 

Post 1 Energy and Phase Changes

Energy and phase changes are physical changes of state where intermolecular bonds are broken (not intramolecular bonds).
To determine this, use the equation q=mc∆t where q= thermal energy in J, c= specific heat capacity, and ∆t= change in temperature.

Post 4 Biodiesel

We burned some Chick-Fil-A oil to make our biodiesel fuel for the boats.

Our boat was made from coroplast which is also commonly used in signs and guinea pig cages (which is my personal use for it). We used a whole ton of hot glue to keep the boat water proof but on racing day it passed the line and a little over 22 sec.

Here's some boats in action: youtube
                                              youtube