Laws
Pressure and volume have what kind of relationship
Inverse
How many grams are in 7 moles of C4H8?
392.76 mols
It takes 30 calories of energy to heat a 13.2g sample of an unknown metal from 18C to 49C. Determine the specific heat capacity of the unknown metal.
0.3067
CH4 draw the molecule and the dipole moments if any, what bonds are present
LDF, nonpolar, no net movement
What is 6.022x10^23 mean? What are the possible labels?
Avagadro's #, could be in atoms, molecules
Temperature and Volume have what kind of relationship
Direct
Convert 102.8 grams H2O to molecules
3.435x1025 molecules
4000J of heat energy is applied to a 70g sample of water initially at 35C. What is the final temperature of the sample.
48.66
SO2 draw the molecule and the dipole moments if any, what bonds are present
Dipole-Dipole, LDF, Polar, downward net movement
When do we use molar mass?
To solve for grams or mols
Pressure and Temperature have what kind of relationship
Direct
Convert 2.8 moles of C3H8 to grams of CO2
369.7g CO2
100g of an unknown metal at 150C was dropped in a bucket containing 50g of water initially at 21C. The final temperature of the mixture was 32C. What is the specific heat capacity of the unknown metal.
0.195
2 HF molecules interact with each other
draw the molecule and the dipole moments if any, what bonds are present
Hydrogen bonds, LDF
Exo is the release of energy, endo is absorbing energy
Exo is - and endo is +
Exo is right and endo is left
If I heat up a balloon that is at room temperature to 40C, what happens to pressure and the balloon.
It increases, popping the balloon.
If 38g H2O reacts, how many moles of CO2 are produced?
1.58 mol CO2
Calculate the total heat, in J, needed to convert 15g of liquid ethanol at 25C to gas at its boiling point of 78C. Ethanol has specific heat of 2.46 J/gC and a heat of vaporization of 841 J/g.
14,600J
NaCl and H2O
What kind of bonds do these two molecules make
Ion-dipole moment
What is Le Chatelier's principle?
What are inter/intra molecular forces?
Concentration changes that shifts a reaction to maintain equilibrium.
Inter- between two molecules, Intra- in an atom
If a marshmallow is in a vacuum chamber and pressure is lowered, what happens to the marshmallow?
It expands, the air in the marshmallow rushes out into the space of the jar. This relieves pressure.
How many grams N2 are needed to make -550.0 kJ.
166 g N2
A 100g sample of aluminum (c=0.90 J/gC) at 120C and a 150g sample of Iron metal (c=0.45J/gC) at 90C were placed ina container of 80g of water at 15C. What is the final temperature of the mixture?
48.6
Hydrogen, Dipole-dipole, Ionic, Covalent, Ion-dipole, Dispersion
Ionic, Covalent, Hydrogen, Ion-Dipole, Dipole-Dipole, Dispersion
Draw the Heating Curve
Terms used: solid, liquid, gas, Hvap, Hfus, melting point, boiling point
draw