Changing Mass to Number of Moles
This page is designed to help students practice written problems, and is meant to be printed out. Hit the print command and show all work in the spaces provided.| Change the following masses to moles, by dividing the mass by the molar mass. # of Moles = mass given/molar mass | |
| 1. How many moles does 80.0 grams of H2O represent?
| 2. How many moles does 45.0 grams of C6H12O6 represent? |
| 3. How many moles does 22.0 grams of CO2 represent?
| 4. How many moles does 56.0 grams of N2 represent? |
This page is designed to help students practice written problems, and is meant to be printed out. Hit the print command and show all work in the spaces provided. Round answers correctly and show proper units.
| Change the following number of moles to mass by multiplying the number of moles by the molar mass. mass of sample = # of moles x molar mass | |
| 1. What is the mass of 2.0 moles of LiOH ?
| 2. What is the mass of 5.0 moles of Ba(CN)2 |
| 3. What is the mass of 3.5 moles of water?
| 4. What is the mass of 0.75 moles of CuSO4. |
This page is designed to help students practice written problems, and is meant to be printed out. Hit the print command and show all work in the spaces provided. Round answers correctly and show proper units.
| Change the following number of moles to number of particles by multiplying by Avogadro's number. # of particles = # of moles x (6.02 x 1023) | |
| 1. How many atoms does 2.0 moles of He represent?
| 2. How many sodium ions are in 3.0 moles of NaCl? |
| 3. How many molecules are in 0.25 moles of CH4?
| * 4. How many total atoms are in 1.0 moles of H2O ? |
This page is designed to help students practice written problems, and is meant to be printed out. Hit the print command and show all work in the spaces provided. Round answers correctly and show proper units.
| Change the following number of particles to number of moles by dividing by Avogadro's number. # of moles = # of particles / (6.02 x 1023) | |
| 1. How many moles of water does 6.02 x 1023 molecules represent?
| 2. Convert 3.01 x 1023 molecules of C2H6 to moles. |
| 3. How many moles of glucose does 1.2 x 1024 molecules represent?
| 4. How many moles of CaCl2 does 2.41 x 1024 formula units represent? |
This page is designed to help students practice written problems, and is meant to be printed out. Hit the print command and show all work in the spaces provided. Round answers correctly and show proper units.
| Change the following number of particles to masses by: | |
| 1. What would be the mass of 1.20 x 1024 molecules of water?
| 2. What would be the mass of 2.41 x 1024 formula units of barium hydroxide? |
| 3. How much mass does 1.51 x 1022 atoms of neon represent?
| 4. How much mass does 7.53 x 1022 molecules of CH4 represent?
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