CHEMICAL QUANTITIES CONVERSIONS
Name:________________________
THE MOLE AND VOLUME
For gases at STP, one mole occupies a volume of 22.4 Liters. Complete the following conversions.
1. Convert 1.5 moles of H2 into Liters.
2. Convert 3.2 moles of O2 into Liters.
3. Convert 50 Liters of CO2 into moles.
4. Convert 12 liters of N2 into moles.
THE MOLE AND VOLUME, PARTICLES AND MOLAR MASS
Complete the following conversions between units using the conversion factors listed below.
1 mole= 22.4 Liters of gas at STP
1 mole= 6.02 x 1023 representative particles
1 mole = molar mass (sum of the mass of all the atoms within the compounds—masses for each element
can be found on periodic table)
5. 0.05 moles of C2H4 into Representative particles (molecules)
6. 50 grams of NaCl into moles
7. 3.5 x 1025 molecules of CO2 into moles
8. 28 liters of O2 gas into moles
9. 1.2 moles of KF into grams
10. .04 moles of N2 gas into Liters
MIXED MOLE CONVERSIONS
Use the following conversions factors to convert the given quantity into the desired unit.
1 mole= 22.4 Liters of gas at STP
1 mole= 6.02 x 1023 representative particles
1 mole = molar mass (sum of the mass of all the atoms within the compounds—masses for each element
can be found on periodic table)
1. a.) How many grams are there in 1.5 x 1025 molecules of CO2?
b.) What volume would the 1.5 x 1025 molecules of CO2 occupy at STP??
2. a.) A sample of NH3 gas occupies 75.0 liters at STP. How many molecules is this?
b.) What is the mass of the 75.0 liter sample of NH3?
3. a.) How many atoms are there in 1.3 x 1022 molecules of NO2?
b.) What is the mass of 1.3 x 1022 molecules of NO2?
4. a.) A 5.0 gram sample of O2 is in a container at STP. What volume is the container?
b.) How many molecules of oxygen is this 5.0 gram sample?
5. a.) A sample of NH3 gas at STP occupies 10 liters. What is the mass of this sample?
b.) How many atoms are in the 10 liter sample of NH3?