Name:Course:Date:Unit 6 Lesson 3U6L3 Stoichiometry PortfolioStoichiometry can be thought of as the math of chemistry. It involves usingrelationships between reactants and/or products to determine such quantitiesas mass mole and number of atoms. Dimensional analysis is a way tosimplify stoichiometric problem solving. In this activity you will usedimensional analysis in order to count the number of atoms in a givensubstance.Define Terms: Define these 3 terms in your own words and when they are usedin solving problems: Mole Molar Mass & Coefficients.Mole:??Molar Mass:??Coefficients:Instructions: You will be given a few substances with its mass and you will becalculating for: 1) the number of moles for the substance and 2) the numberof atoms for the substance. You will need to show all calculation work.Question 1A sample of gold (Au) has a mass of 40.14 g.• A) Calculate the number of moles of gold (Au) in the sample. Show yourwork and highlight your final answer.??Calculation:© 2010 Connections Academy® LLC. All rights reserved. ???B) Calculate the number of atoms of gold (Au) in the sample. Show yourwork and highlight your final answer.?•?Calculation:Question 2A sample of sodium chloride (NaCl) has a mass of 30.22 g.• A) Calculate the number of moles of NaCl in the sample. Show yourwork and highlight your final answer.??Calculation:?????????© 2010 Connections Academy® LLC. All rights reserved. B) Calculate the number of moles of each element in NaCl. Show yourwork and highlight your final answer.?•?Calculation:?????????•C) Calculate the number of atoms of each element in NaCl. Show yourwork and highlight your final answer.Calculation:??Question 3A sample of table sugar (sucrose C12H22O11) has a mass of 1.604 g.• A) Calculate the number of moles of C12H22O11 contained in the sample.Show your work and highlight your final answer.??Calculation:© 2010 Connections Academy® LLC. All rights reserved. ?????????B) Calculate the number of moles of each element in C12H22O11. Showyour work and highlight your final answer.?•?Calculation:?????????•C) Calculate the number of atoms of each element in C12H22O11. Showyour work and highlight your final answer.Calculation:© 2010 Connections Academy® LLC. All rights reserved.
