10-2 Review and Reinforcement
Packet #2 Quarter 3 assignment 5.
Mole Conversions
Answer Each of the following questions in the space provided.
1. How would you calculate the number of moles present in a given mass of a substance?
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2. How would you calculate the number of particles present in a given number of moles of a substance?
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3. How would you calculate the number of particles present in a given mass of a substance?
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Complete each of the following conversions as directed. Show all work.
4. 3.5 mol C =__________gC
5. 1.6x10^24 formula units FeCl3=__________mol FeCl3
6.27.6g Ar= __________ mol Ar
7. 4.10 mol BaSO4=__________ formula units BaSO4
8. 16.5x10^23 atoms Zn= __________ mol Zn
9. 0.0621 mol K2S=____________g K2S
10. 65.8g Mg=______________atoms Mg
Solve each of the following problems as directed. Show all your work.
11. Calculate the number of atoms in 0.40 mol of sulfur.
12. Calculate the number of atoms in 2.30 mol of silver.
13. You have a tank of NO2 gas. If the tank contains 5 mol of the gas, how many molecules are in it?
14. A recipe for chili calls for 3g of NACL. How many forumula units of NACL is that?
15. If you used 30.6g of methanol (CH3OH) to start a fire, how many molcules did you use?