Discussion Week 6 - PAGE1 Background Paper:.

Discussion Week 6 - PAGE1 Background Paper:.

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PAGE 1 Introduction to the Mole and Molar Mass Background When you buy eggs you usually ask for a 12  eggs.  You know that one dozen of any item is 12 . Paper: Paper is packaged by a ream.  A ream of paper has 500 sheets. Why is it useful to use units like a dozen or a ream? It is easier to calculate items if you know that dozen mean 12 and ream means 500 What determines how many items should make up a particular unit? If you were asked to design a new unit to count something, what would you consider when  choosing how many items should be included in your new counting unit? Data Table 1 Name of items in the package Number of items Mass of the package Jolly Ranchers Caramels Hershey’s Kisses ANALYSIS AND INTERPRETATION As you know, a dozen represents 12 items.  Since I did not have enough items to make a dozen, I decided to make a new counting unit. I  called this unit a DART. Each of your Dart packages contains 8  (Put your own made up  number here) items. 1. A DART of oranges will have 8  oranges. 2. A DART of pretzels has 8  pretzels.  3. A DART of molecules of water has 8  molecules of water. 4. A DART of particles has 8  particles. 5. A DART of atoms of iron has 8  atoms of iron. 6. A DART of formula units of salt has 8  formula units of salt. 7. How many Hershey’s Kisses are in 2 DARTS? 16 8. How many caramels are in 10 DARTS? 80 9. How many Dum Dum Pops are in 400 DARTS? 3,200
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10. How many Starbursts are in 1/2 DART? 4 11. Write the directions for finding the number of items if given the number of DARTS Just add a 0 PAGE 2 12. How many oranges are in 5 DARTS? 40 13. How many apples are in 0.5 DARTS? 4 14. How many pencils are in 0.25 (1/4) DARTS? 2 15. How many atoms of silver are in 20 DARTS? 160 16. How many molecules of water are in 5 DARTS?  40 17. How many DARTS are 16 Hershey’s Kisses? 128 18. How many DARTS are 100 pretzels? 800 19. How many DARTS are 400 Starbursts? 3200 20. How many DARTS is 1 orange? 8.0 (Write a fraction or a decimal.)
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  • Winter '15
  • Jones
  • Mass, Jolly Ranchers

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