Solutions
What is the equation for molarity?
M = mol/L
Molarity = mol of solute/L of solution
BONUS: In order to lower the concentration of a solution we must increase....
Determine the type of reaction for the following equation:
2Na + Cl2 -> 2NaCl
Synthesis
BONUS: What is the general formula for a synthesis reaction?
Based on the following equation, if 4 moles of C4H10 are combusted, how many moles of H2O will be produced
2C4H10 + 13O2 -> 8CO2 + 10H2O
20 moles of H2O
BONUS: The fraction used to convert between moles of known and moles of unknown is called the...
Based on KMT, what property describes the kinetic energy of molecules?
Temperature
BONUS: What happens to molecules to absolute zero?
If the volume of a gas is 3.00 L at 115 kPa, what will the volume be at 150. kPa?
2.30 L
BONUS: Who's law is this?
A solution that has a low molarity is considered to be a _________________ solution, while a solution that has a high molarity is considered to be a _______________________ solution.
dilute
concentrated
What are the coefficients for the following reaction when balanced?
AgNO3 + MgCl2 -> AgCl + Mg(NO3)2
2,1,2,1
BONUS: What type of reaction is this equation?
How many grams of hydrogen gas are produced from 15.0g of Sodium based on the following equation:
2Na + H2O -> 2NaOH + H2
0.659 g of H2
If the temperature of a gas increases, what will happen to the volume of the gas?
As temperature increases, volume increases
BONUS: Sketch a graph with labelled axes representing this relationship
If the volume of a gas is 8.50 L at 25.0 C, what will the volume be at 48.0 C?
9.16 L
BONUS: Who's law is this?
What is the concentration of a solution made of 3.5 mol of NaOH in 1.25 L of solution? The answer must have the correct number of sig figs to get points.
2.80 M
What are the coefficients of the following equation when balanced:
H2SO4 + KOH -> H2O + K2SO4
1,2,2,1
BONUS: What type of reaction is this?
Based on the following equation, how many liters of oxygen gas would be required to produce 3.0 moles of diphosphorus pentoxide?
4P + 5O2 -> 2P2O5
170 L of O2
Based on KMT and gas laws, is the relationship between the pressure and Volume of a gas direct or indirect (inverse)?
indirect
If the total pressure of a mixture of gasses is 125 kPa, what is the partial pressure of nitrogen gas if it makes up 45.0% of the total pressure?
56.3 kPa
What is the volume of a 1.5 M solution made from 3.0 moles of solute?
2.0 or 2.0 L
Write out and balance the following equation:
Dicarbon octahydride reacts with oxygen to produce water and carbon dioxide
C2H8 + 4O2 -> 4H2O + 2CO2
In a lab, a student reacts 2.00 moles of CH4 with excess O2 and measured 33.5 g of water after the reaction. Based on the equation, what was his percent yield?
CH4 + 2O2 -> H2O + 2CO2
93.0%
Based on KMT and gas laws, as molecules collide, they undergo a certain type of collision. Describe the collision of these molecules.
The molecules undergo elastic collision meaning that when they collide, no energy is lost so they both maintain their speed/velocity.
At 30.0 C and 98.0 kPa, a gas has a volume of 7.5 L. What will the new volume be if the pressure rises to 111 kPa and increases in temperature to 40.0 C?
6.84 L
How many grams of KNO3 are in 0.750 L of a 5.00 M solution?
Write out and balance the following equation:
Hydrochloric acid reacts with calcium carbonate to yield calcium chloride, water, and carbon dioxide
2HCl + CaCO3 -> CaCl2 + H2O + CO2
When nitrogen gas reacts with hydrogen gas, ammonia is formed (NH3). If 2.0 moles of nitrogen gas reacts with 3.0 moles of hydrogen gas, what is the limiting reactant?
H2, or hydrogen gas
Based on KMT and gas laws, what are we measuring at a molecular level when we measure pressure?
The force and frequency of the particles collisions against the sides of the container
If a container of CO2 has a volume of 3.50 L and is at a pressure and temperature of 109 kPa and 45.0 C, how many grams of CO2 are in the container? (R=8.314 J*kPa/mol*K)
6.35g