Classmates
This classmate plays beach volleyball
What is Merrick?
Given 450mg of salt, how many grams do you have?
(1000mg=1g)
0.45 grams
When a chemical bond is formed, energy is always released, making it this type of reaction.
Exothermic
What type of engine uses a spark plug?
gasoline engine
What does the "T" variable represent in the combined gas law formula?
temperature
This classmate has a cool watch
Who is Harlan
You have 24 grams of carbon. How many moles of carbon do you have?
2 moles
True or False: Breaking a chemical bond releases energy into the environment.
False
Diesel engines use compression and a spark plug.
True or False?
False
(Diesel engines use only compression)
As temperature increases, what also increases?
pressure
How many people are in period 2 Miss Cassidy?
what is 36 students
You have 2 Liters of a 3 M(3 Molar) acid solution. How many moles of acid are in the bottle?
6 moles
Between a single bond, a double bond, and a triple bond, this one is the strongest and requires the most energy to break.
Triple Bond
What is the name of the gas that engines need to function?
(humans need this as well)
Oxygen
What is the combined gas law formula?
P1V1/T1 = P2V2/T2
There is 0.5 moles of pure gold (Au), how many atoms is inside the gold?
(Use Avogadro's Number: 6.022x10^23)
3.011x10^23 atoms
This is the most common unit of measurement used to quantify bond energy, representing the amount of energy in thousands of Joules per mole
kj/mol
What is the combustion reaction formula?
2C8H18+25O2 ---> 16CO2+18H2O
To properly solve any problem using the Combined Gas Law, this specific variable must always be converted from Celsius to Kelvin.
What is temperature?
What colleges did Miss Cassidy go to?
Vassar and UC Berkeley
You have a 10mL cube of metal. The metal has a density of 5g/mL and a molar mass of 10g/mol. How many moles are in the cube?
*find total weight then convert into moles
5 moles
To find the total energy change in a reaction, you take the energy used to break bonds and subtract the energy released when these are created
Products
How many kj/mol does coal release?
300-400 kj/mol
The Combined Gas Law is derived by looking at the behavior of these three specific physical properties of a gas.
What are pressure, volume, and temperature?