DUE Fri May 31 by END OF SCHOOL DAY Name Period STOICHIOMETRY PRACTICE WORKSHEET #1 Use at least 4 significant figures in all molar masses. Keep 3 significant figures in final answers. YOU MUST SHOW ALL (ORIGINAL) WORK AND ACHIEVE 85% CORRECT ON THIS WORKSHEET TO BE ELIGIBLE FOR THE RETAKE. Copying is not tolerated; identical worksheets will not be considered eligible. 1. How many moles are in 31.2 g of Ne? 2. How many moles are in 72.5 g of Fe? 3. How many grams are in 2.5 moles of Au? 4. Convert 1.6 moles Zn to grams. 5. Calculate the molar mass of H2O. 6. How many moles are in 50.0 g of H2O? 7. Convert 62.7 g Fe2O3 to moles. 8. Calculate the mass of 5.0 moles of N2 gas.