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WorksheetsQ3 Review: Molar Relationships & States of Matter
Total questions: 20
Worksheet time: 40mins
How many molecules are in 2.1 moles of CO2?
3. 5 x 10-24
1.26 x 1024
44
92.4
How many moles are in 5.0 L of Ar gas (at STP)
0.22 moles
112 moles
1 mole
0.125
What is the mass in grams of 5.9 mol C8H18?
114.23 grams
674 grams
0.05 grams
1 gram
What is the empirical formula for C3H6?
C2H
CH2
C3H6
CH3
What is the empirical formula for C12H22O11?
CH2O
C12H22O11
C6H11O6
CH3
What is the empirical formula for C2H4Br2?
C2H4Br2
CH2Br
C2HBr2
CHBr
A compound consists of 75% carbon and 25% hydrogen by mass. What is the empirical formula?
C2H4
CH4
CH
C3H6
A 88.0 g sample of a compound consisting of carbon and hydrogen contains 81.2 g of carbon and 6.8 g of hydrogen. What is the empirical formula?
C2H4
CH4
CH
CH2
Using the following equation: Fe2O3 + 3H2 → 2Fe + 3H2O, If 6 moles of H2 reacted, how many moles of iron are produced?
4 moles Fe
3 moles Fe
2 moles Fe
6 moles Fe
C3H8 + 5O2 → 3CO2 + 4H2O, If 1.00 liter of oxygen gas is used, how many liters of carbon dioxide will be produced at standard temperature and pressure (STP)?
0.6 L
6 L
1 L
0.3 L
Using the following equation: Li3N + 3H2O --> NH3 + 3LiOH. Determine the mass of lithium hydroxide produced when 0.38g of lithium nitride reacts with water.
0.78 g
0.38 g
1.66 g
1 g
According to the kinetic molecular theory, the temperature of a gas depends on the _____________ of the gas particles.
speed
distance
volume
molar mass
A hypothetical gas that perfectly fits all the assumptions of the kinetic molecular theory is known as _____________
an ideal gas
a real gas
a diatomic gas
an inert gas
Which graph represents the relationship between pressure and volume for a sample of an ideal gas at constant temperature?
If the temperature is kept constant and the piston moves down to decrease volume, the pressure increases because the gas particles
Collide with the walls of the cylinder more frequently
Have increased kinetic energy
Occupy a smaller volume
Experience reduced intermolecular forces
Based on the relationship between P and V. If a gas of volume V is place in a balloon. The pressure is reduced to 1/5 of the original pressure. The volume will be _____ what it was originally.
If I initially have 4.0L of a gas and a pressure of 1.1 atm, what will the volume be if I increase the pressure to 3.4 atm?
1.29 L
1.64 L
0.43 L
0.53 L
A water bottle at STP is cooled to -155°C. What is the new pressure?
0.43 atm
0.682 atm
1.568 atm
2.187 atm
Intermolecular forces are forces that exist ________________ two or more _____________________.
between; ions
within; atoms
between; molecules
within; electrons
What explains the physical properties of water such as a very high melting and boiling point?
hydrogen bonding
ion-ion attractions
a high density
a large gram formula mass
