BANKING DAY SCHEDULE (SHORT DAY)

Transcription

1 MONDAY 2/26/18 BANKING DAY SCHEDULE (SHORT DAY) 1

2 2/26/18 OBJECTIVES cmpd = compound a. Be able to convert mol (cmpd) < > g (cmpd) mol (cmpd) < > particles (cmpd) b. Be able to figure out the molar mass of a compound. DO NOW a. What is the molar mass of H 2 SO 4 Homework a. p (4 pts) b. print and bring lab sheet for Mole Lab (1 pts) (see HW pg) ====================================================== ORAL REPORT a. p. 318 (13 abcde) and 14 (abcde) (5 pts) 10 Probs 1 pt /each 2 problems not done (5 pts) Avo 6.02 x K

3 Preparation for DO NOW Calculate molar mass of CaCl 2 Given Find molar mass Ca = g CaCl 2 Find the molar mass of CaCl 2 molar mass Cl 2 = x 2 = g g (Ca) g (Cl 2 ) g (CaCl 2 ) 3

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7 Announcements 1. I encourage you to sign up for Oratorical. 2. The Molar Mass Lab will be held tomorrow. See today's HW page for a link to print that lab paper. You need to print it for tomorrow's lab. 7

8 p. 318 (13 abcde) 13 abcde a. Given Find c. Given Find 4.79 x atoms Li e. Given Find 3.45 x atoms Hg 1.51 x atoms Ti 8

9 p. 318 (14 (abcde) a x 10 3 g Bi 9

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13 TUESDAY 2/27/18 13

14 2/27/18 OBJECTIVES a. Collect all data needed for the Molar Mass Lab DO NOW a. Silently read the lab sheet Homework a. Complete your lab to be turned in tomorrow (15 pts) ====================================================== ORAL REPORT a. p (4 pts) b. print and bring lab sheet for Mole Lab (1 pts) (see HW pg) 1 pt /each problem not done (4 pts) 1 pt if no printout Avo 6.02 x K

15 Announcements 1. I encourage you to sign up for Oratorical, snack or lunch today ASB Room and or Quad. 2. Collect data today and try to complete tonight to be turned in tomorrow. 15

16 If molar mass of an element = 28.1 g/mol who is it? do this day before If molar mass of an element = 30.1 g/mol who is it? If molar mass of an element = g/mol who is it? Your job is to collect the data needed to get the molar mass of 12 elements. Once you have the molar mass (g/mol) of the element, you can determine: a. element's identity b. metal/non metal 16

17 Take a picture of the next screen Copy the markings onto your data sheet do this day before 17

18 do this day before notebook # on your first bottle column 4 = 1 2 column 5 = 4 / 3 on bottle on bottle At least one person in each group takes pic of this screen 18

19 Procedures to be followed in Molar Mass : Lab 1. Lab groups will be 3 students. Bottles move, people don't. 2. Lab group# is the # on the first bottle at your scale. Circle that # on your data sheet. Bottles travel counter clockwise around room. Be sure you start recording data on the line that is also your lab group #. 3. There will be 3 jobs in each group and 1 person for each job: a. Weigher best with 4 beam. If someone in gp needs practice weighing have them weigh when no back ups. b. Recorder 1 #'s on bottles c. Recorder 2 records physical characteristics and passes bottle. 4. Number 1 12 on a separate sheet of paper. That is where you will record the physical characteristics of each element you are observing. 5. Complete all data gathering before end of period. REMEMBER ALL WEIGHED MASSES MUST HAVE 3 DECIMALS 19

20 no no's No calculations unless you are waiting for your next element bottle DO NOT OPEN BOTTLES 20

21 1 2 3 Front of room counter clockwise ORIGINAL CAN BE CHANGED but better zoomed in pic nxt pg 21

22 This is a snip and cannot be changed 22

23 use after lab started 3 #'s after decimal You don't have this, that is why it is a guess digit 23

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26 WEDNESDAY 2/28/18 26

27 OBJECTIVES a. Practice finding molar mass of compounds to mass < > particles CLASSWORK DUE IN WHITE BASKET END OF PERIOD a. p. 322 read examples & do 25 & 26 (3 pts) b. p. 323 read examples & do (2 pts) Homework a. Get phone #'s of those in your lab group, collaborate if needed on completing your lab. ====================================================== To complete your lab for full credit, do the following (20 pts): 1. complete the chart you started yesterday in class (calculations, guesses on element in each bottle, whether they were metal or non metal) 2. answer 4 questions below the chart 3. complete your list of physical properties of each element (12 of them) things like texture, color, feels heavy or light for amount of stuff in the jar. If you are stuck on guesses for element names, use Google search to get physical characteristics of the elements you identified that you aren't sure of to your obseravations. 4. Thursday you may come in before school, lunch, or break to get anything you missed in the lab that you need. Lab may be turned in any time Friday and be on time. ALL OF THIS IS NOW ON LINE IN THE WHITEBOARD FILE FOR THIS WEEK. 27

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30 THURSDAY 3/1/18 30

31 3/1/18 OBJECTIVES a. Debrief Lab so it can be turned in tomorrow (20 pts). b. Be able to calculate the molar mass of any compound. DO NOW a. Given 7 mol K 2 CrO 4 how many moles of K 1+ and how many moles of CrO 4 2 are present? Homework a. Complete your lab to be turned in tomorrow (20 pts) b. p. 324 (a,b,c,d,e), p (ab) (5 pts) ====================================================== ORAL REPORT a. none 1 pt /each problem not done (4 pts) 1 pt if no printout Avo 6.02 x K

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33 DO NOW a. Given 7 mol K 2 CrO 4 how many moles of K 1+ and how many moles of CrO 4 2 are present? 33

34 LAB What do you need? To complete your lab for full credit, do the following (20 pts): 1. complete the chart you started during the lab (calculations, guesses on element in each bottle, whether they were metal or non metal) 2. answer 4 questions below the chart 3. complete your list of physical properties of each element (12 of them) things like texture, color, feels heavy or light for amount of stuff in the jar. If you are stuck on guesses for element names, use Google search to get physical characteristics of the elements you identified that you aren't sure of to your obseravations. 4. Friday you may come in before school, lunch, or break to get anything you missed in the lab that you need. Lab may be turned in any time Friday and be on time. 34

35 notebook # on your first bottle column 4 = 1 2 column 5 = 4 / 3 on bottle on bottle 35

36 Announcements 1. If you did not complete the lab on Tuesday, or you were absent, you have 15 min to either start or complete this lab. 36

37 Answers to p mol Cl mol C / 15.0 mol H / 7.50 mol O mol SO mol O mol H 37

38 p. 326 #31 a calculate molar mass of formula unit 38

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44 FRIDAY 3/2/18 44

45 3/2/18 OBJECTIVES a. Practice new type of calculation with 4 fractions DO NOW a. Given 5.00 g Al 2 (SO 4 ) 3, how many SO 4 2 ions are present? Homework a. p (abc) and 34 (abc) (5 pts) ====================================================== ORAL REPORT p (a,b,c,d,e), p (ab) (5 pts) WHITE BASKET Molar Mass Lab 20 pts (will be considered on time any time today 7 problems, 1 for each 2 not done (5 pts) 19 K

46 Example for DO NOW Given Find 3.5 g AlCl 3 number of Cl 1 ions given molar mass mol ratio Avo 3.5 g AlCl 3 1 mol AlCl x 3 3 mol Cl x 1 x 6.02 x 1023 Cl g AlCl 1 mol AlCl3 1 mol Cl 1 3 = x Cl 1 = 4.74 x Cl 1 Al 1 x = Cl 3 x = molar mass of AlCl g/mol 3 AlCl 3 particle pointer 46

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48 THURSDAY 3/1/18 48

49 3/1/18 OBJECTIVES a. Debrief Lab so it can be turned in tomorrow (20 pts). b. Be able to calculate the molar mass of any compound. DO NOW a. Given 7 mol K 2 CrO 4 how many moles of K 1+ and how many moles of CrO 4 2 are present? Homework a. Complete your lab to be turned in tomorrow (20 pts) b. p. 324 (a,b,c,d,e), p (ab) (5 pts) ====================================================== ORAL REPORT a. none 1 pt /each problem not done (4 pts) 1 pt if no printout Avo 6.02 x K

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52 FRIDAY 3/2/18 52

53 3/2/18 OBJECTIVES a. Practice new type of calculation with 4 fractions DO NOW a. Given 5.00 g Al 2 (SO 4 ) 3 g how many SO 4 2 ions are present Homework a. p (abc) & 34 (abc) (5 pts) ====================================================== WHITE BASKET Molar Mass Lab (20 pts) ORAL REPORT p. 324 (a,b,c,d,e), p (ab) (5 pts) 7 problems, ea 2 missed = 1pt (5 pts) Avo 6.02 x K

54 GIVEN 3.50 g AlCl 3 FIND? Cl 1 ions given/ g AlCl 3 1 x PT 1 mol AlCl g AlCl 3 mol ratio (new) Avo x 3 mol Cl1 ions x 6.02 x 1023 Cl 1 ions 1 mol AlCl 3 1 mol Cl 1 ions = x Cl 1 ions = 4.74 x Cl 1 ions Al 1 x g = Cl 3 x g = g/mol AlCl 3 calculate molar mass AlCl 3 54

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