Tip the Scale
ionic
This the type of reaction shown here:
H2 + O2 --> H2O
What is a Synthesis Reaction
3 moles of sodium chloride crystals is how many sodium atoms?
1.81x1024 sodium atoms
This kind of gas has particles with zero volume and no attractive forces between them
What is an Ideal Gas
This weird type of solution is one that has more solute than it should normally have
Supersaturated
A solution with a solubility of 0.1g/L would be considered this
This is the type of reaction shown here:
MgCl2 + F2 --> MgF2 + Cl2
What is Single Displacement Reaction
This is the molar mass of sugar C6H12O6
What is 342.3g/mol
Give a reason that gases are "weird", as in different than solids and liquids
-Fill their container (can change volume)
-Are compressable (can change pressure)
These ions don't actually participate in a chemical reaction and "cancel out" after the net ionic equation. Weird!
Spectator Ions
H3PO4 is considered a weak acid. This means a 1M solution of this acid probably falls in this area of the pH scale:
a) Above 10
b) 8-9
c) 7
d) 5-6
e) Less than 4
d) 5-6
This is the type of reaction shown here:
C6H12O6 + O2 --> CO2 + H2O
What is a Combustion Reaction
2 moles of lithium oxide breaks down to lithium metal and oxygen gas. Asuming ideal gases at STP, what volume of oxygen gas is produced?
Li2O --> Li + O2
22.4L
(balanced: 2Li2O + 4Li + O2)
If you go Scuba diving you must be very slow in coming back up after a dive. If you go up to quickly and hold your breath you can cause damage (stretching and tearing) of your lungs. Who's gas law helps explain this?
Boyle's Law (pressure and volume, volume inside lungs increases as pressure decreases)
This trend decreases going from left to right on the Periodic Table, opposite from what you might expect since we are adding mass to the atoms! Weird!
Atomic Radius
The solubility of a compound in water is 5g/L. You are able to dissolve 1g of it in 100mL. This solution is now considered this
Supersaturated
This is the precipitate in this reaction:
NaOH + BaCl2 -->
What is Ba(OH)2 (check solubility table)
You react 7.3x1024 atoms of Fluorine gas with 9.2x1024 atoms of sodium atoms. What reactant will get used up first?
What is sodium
2Na + F2 --> 2NaF
12.13 moles of Fluorine and 15.28 moles of Sodium, but sodium gets used up twice as fast in this reaction (by the time 15.28 moles of sodium are used only 7.64 moles of fluorine are used)
At STP the molar volume of a gas is 22.4L. What is the molar volume at Ambient Temperature, 25OC?
What is 24.45L
PV=nRT
(101.325)(V)=(1)(8.314)(298)
Carbon-12, Carbon-13, and Carbon-14 are all the same element just with different masses. Weird! Which would you expect to have the highest isotopic abundance?
Carbon-12
Our blood contains iron due to a bond between hemoglobin's nitrogen atoms and iron. How would you classify this bond?
Polar (EN=1.2)
This is the full balanced reaction when butane gas (C4H10) combusts completely.
2C4H10 + 13O2 --> 8CO2 + 10H2O
6.08g of magnesium rusts by a combustion reaction below:
Mg + O2 --> MgO
What volume of gas is consumed by the rusting if the temperature and pressure outside are 33OC at 110kPa
What is 2.89L
2Mg + O2 --> 2MgO
0.25moles of Mg = 0.125moles of O2
PV=nRT
V = (0.125)(8.314)(273+33)/(110)
-can create atomic chlorine with UV radiation
-are small (so they are most likely gases)
-persist in the environment for a long time (stable)
A wet solution can cause this to be very weird. Over 100%??? Impossible!
Percent Yield