Stoichiometry
Molarity Calculations
Definitions
Molar Mass and Types of Chemical Reactions
Random
100
Water has an atomic mass of 18 amu. What is the mass of 1 mole of water?
18g
100
What is the molarity of a solution containing 6 moles of solute and 2 liters of solvent?
3 M
100
the substance being dissolved in a solution
solute
100
Find the molar mass of Li2O
29.88 g/mol
100
polar substances dissolve polar substances; nonpolar substances dissolve nonpolar substances
like dissolves like
200
How many liters are in one mole?
22.4L
200
What is the molarity of a solution containing 56 moles of solute and 8 liters of solvent?
7 M
200
the substance doing the dissolving, present in the largest quantity
solvent
200
What type of chemical reaction is this?
single replacement/displacement
200
How do particles dissolve in each other?
random motion of particles colliding; mix them together
300
How many molecules are in one mole?
6.02 x 1023 molecules
300
How many moles are in a 18 L solution with a concentration of 3 M?
54 moles
300
When energy is released from a reaction
exothermic
300
What type of chemical reaction is this?
combustion
300
Name three factors that affect solubility.
surface area/molecular structure, temperature, pressure (gases only)
400
How many liters are in 32 grams of O2
22.4L
400
How many liters of water do I need to make a 2.2 M solution with 11 moles of NaCl?
5 L
400
a measure of how much solute is dissolved in a specific amount of solvent
concentration; solubility
400
Find the molar mass of (NH4)2SO4
132.14 g/mol
400
On a solubility curve, the line of the curve itself represents when the solution is
saturated
500
2Mg + O2 --> 2MgO
If 20 grams of Mg are burned, how many grams of MgO are produced?
33g
500
What is the molarity of a solution containing 785 grams of KCl and 1200 mL of water? (Use correct sig figs)
8.8 M
500
a solution in which more solute is dissolved than the solvent normally holds at a particular temperature
supersaturated
500
!!SPECIAL!!
What type of chemical reaction is this? (There are 2 right answers; you can get 500 points for listing 1 of them and 1000 points for listing both!)
double replacement/displacement
AND
neutralization
500
The unit for specific heat
J/g°C