Name ______________________________ Date ________________ The Mole – Exit Ticket 1. Use the mole concept to calculate the number of molecules in 1.14 mol of sulfur trioxide (SO3) 2. How many carbon atoms are in 2.12 mol of propane? How many hydrogen atoms are in 2.12 mol propane? (C3H8) 3. What do you need to know to convert something, such as the mass, volume, count, etc.? 4. How do chemists count the number of representative particles in a substance? 5. How do you determine the molar mass of an element? How do you determine the molar mass of a compound? 6. How many moles is 1.50 x 1023 molecules of NH3? 7. Use the concept of the mole to find the molar mass of CaSO4. 8. How many grams of water do I need to have in a reaction if I need 75.6 moles of water?