University:
Jackson College
Course:
CEM-141 | General Chemistry I
Academic year:

2021
Views:

359

Pages:

4
Author:

Annie Duran

Chemistry 11 NAME: Let s tr some more.. 1. What is the Molar Mass of Propane C3H8? 2. What is the Mol r Mass of Ah SO ? 3. What is the Molar Mass of one mole of Oxygen gas (O2)? 4. What is the Mass of one molecule of oxygen g s? 5. What is the Mass of one mole of oxygen atoms? 6. What is the Mass of one atom of oxygen? 7. If a steel cylinder contains 3.01 x 10 carbon dioxide molecules, how many moles of oxygen atoms are in the cylinder? 8. How many carbon dioxide molecules are in 0.75 mol of CO2? 9. How many ato s are there in 26.O of carbon? 10. How many oles of carbon re in 26 g of carbon? 11. How many oxygen toms are in 0.75 mol CO2? Be sure to check your sig figs! Chemistry 11 NAME: More Moles, Please! 1. How many moles of Heliu atoms are there in 6.46g of Helium? 2. How many grams ofZn are in 0.356 mol of Zn? 3. What is the molar mass of SO2 and C8Hi0N4? 4. How ma y moles of CH4 are in 6.07g of CH4? 5. How m ny hydrogen atoms are present in 25.6g of urea, (NHs CO? 6. How many moles of cobalt atoms are in 6.00 x 109 Co atoms? 7. How any ra s of gold are there in 15.3 moles? 8. What is the mass in grams of a single atom of As? 9. The density of water at 4°C is 1.00g/mL. How many water molecules are present in 2.56mL of H2O at this temper ture? STOP! Check your answers with our lab partners. C ll the te cher over for help if your answers are not matching... Chemistry 11 NAME: More Moles, Please! 1. How many moles of Helium atoms re here in 6.46g of Helium? 2. How many grams of Zn are in 0.356 mol of Zn? 3. What is the molar mass of SO2 and CgHioN 4. How ma y moles of CH4 are in 6.07g of CH4? How ma v hydrogen atoms are present i 25.6g of urea, (NJ CO? 4 6. . ' < Z 4-. How many moles of cobalt atoms are in 6.00 x 10 Co atoms? 7, How any grams of gold are ther in 15.3 o es? 8. Wh t is t e mass i grams of a single atom of As? 9. The de sity of water at 4°C is 1.00 /mL. How many water olecules are prese t in 2.5 mLofH2O at this temperature? t % STOP! Check your answers with your lab partners. Call the teacher over for help if your nswers are not m tching... Chemistry 11 NAME: Let s try some more... 1. What is the Molar Mass of Propane C3H8? 2. What is the Molar Mass of A12(SO4)3? 3. What is the Molar Mass of one mole of Oxygen gas (O2)? 4. What is the Mass of o e molecule of oxygen gas? 5. What is the Mass of o e atom of oxygen? 7. If a steel cylinder contains 3.01 x 1023 carbon dioxide molecules, how many moles of oxygen atoms are in the cyli der? 8. How ma y carbon dioxide molecules are in 0.75 mol of CO2? » 7 I 9. How many atoms are there in 26.0g of carbon? 10. How many moles of carbon are in 26 g of carbon? 11. How many oxygen toms are in 0.75 mol CO2? l„ Be sure to check your sig figs!