Honors&Chemistry& Extra&Practice&Problems ... · Answers - Extra mole, mass, rp practice problems...

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Honors Chemistry Extra Practice Problems – The Mole and Conversions with Mass and Representative Particles Complete the following problems on a separate sheet of paper. 1. Determine the mass of Lithium Carbonate in 4.020 moles of Lithium Carbonate? 4.020 ! ! 1 73.89 ! ! 1 ! ! = 297.0 ! ! 2. Determine the number of representative particles and the type of representative particles in 392.1 g of Oxygen Dichloride. 392.1 ! 1 1 ! 86.905 ! 6.02 10 !" ! 1 ! = 2.716 10 !" ! 3. Determine the number of moles in 93.20 g of Carbon tetrahydride. 93.20 ! 1 1 ! 16.043 ! = 5.809 ! 4. Determine the mass of 9.3021 x 10 27 representative particles of Fluorine. What is the representative particle? 9.3021 10 !" ! 1 1 ! 6.02 10 !" ! 37.996 ! 1 ! = 587,110 ! 5.8711 10 ! ! 5. Determine the mass of 3.902 x 10 28 representative particles of Ammonium Chloride. What is the representative particle? 3.902 10 !! . . ! 1 1 ! 6.02 10 !" . . ! 53.492 ! 1 ! = 3,467,000 ! 3.467 10 ! ! 6. How many moles of Iron III Carbonate are there in 9.032 x 10 30 representative particles of Iron III Carbonate? 9.032 10 !" . . ! ( ! ) ! 1 1 ! ( ! ) ! 6.02 10 !" . . ! ( ! ) ! = 1.500 10 ! ! ( ! ) ! 7. How many representative particles are there in 490.2 grams of Copper I Oxide? 490.2 ! 1 1 ! 143.091 ! 6.02 10 !" . . ! 1 ! = 2.062 10 !" . . !

Transcript of Honors&Chemistry& Extra&Practice&Problems ... · Answers - Extra mole, mass, rp practice problems...

Page 1: Honors&Chemistry& Extra&Practice&Problems ... · Answers - Extra mole, mass, rp practice problems Author: Katharine Macdonald Created Date: 3/23/2014 1:01:38 PM ...

Honors  Chemistry  Extra  Practice  Problems  –  The  Mole  and  Conversions  with  Mass  and  Representative  Particles  

 Complete  the  following  problems  on  a  separate  sheet  of  paper.    

1. Determine  the  mass  of  Lithium  Carbonate  in  4.020  moles  of  Lithium  Carbonate?  

4.020  𝑚𝑜𝑙𝑒𝑠  𝐿𝑖!𝐶𝑂!1  𝑥  

73.89  𝑔  𝐿𝑖!𝐶𝑂!1  𝑚𝑜𝑙𝑒  𝐿𝑖!𝐶𝑂!

= 297.0  𝑔  𝐿𝑖!𝐶𝑂!  

2. Determine  the  number  of  representative  particles  and  the  type  of  representative  particles  in  392.1  g  of  Oxygen  Dichloride.  

392.1  𝑔  𝑂𝐶𝑙!1  𝑥  

1  𝑚𝑜𝑙𝑒  𝑂𝐶𝑙!  86.905  𝑔  𝑂𝐶𝑙!

 𝑥  6.02  𝑥  10!"  𝑚𝑜𝑙𝑒𝑐𝑢𝑙𝑒𝑠  𝑂𝐶𝑙!

1  𝑚𝑜𝑙𝑒  𝑂𝐶𝑙!= 2.716  𝑥  10!"  𝑚𝑜𝑙𝑒𝑐𝑢𝑙𝑒𝑠  𝑂𝐶𝑙!  

3. Determine  the  number  of  moles  in  93.20  g  of  Carbon  tetrahydride.  

93.20  𝑔  𝐶𝐻!1  𝑥  

1  𝑚𝑜𝑙𝑒  𝐶𝐻!16.043  𝑔  𝐶𝐻!

=  5.809  𝑚𝑜𝑙𝑒  𝐶𝐻!  

4. Determine  the  mass  of  9.3021  x  1027  representative  particles  of  Fluorine.    What  is  the  representative  particle?    

9.3021  𝑥  10!"  𝑚𝑜𝑙𝑒𝑐𝑢𝑙𝑒𝑠  𝐹!1

 𝑥  1  𝑚𝑜𝑙𝑒  𝐹!

6.02  𝑥  10!"  𝑚𝑜𝑙𝑒𝑐𝑢𝑙𝑒𝑠  𝐹!  𝑥  37.996  𝑔  𝐹!1  𝑚𝑜𝑙𝑒  𝐹!

= 587,110  𝑔  𝐹!  𝑂𝑅  5.8711  𝑥  10!  𝐹!    

5. Determine  the  mass  of  3.902  x  1028  representative  particles  of  Ammonium  Chloride.    What  is  the  representative  particle?  

3.902  𝑥  10!!  𝑓. 𝑢.𝑁𝐻!𝐶𝑙1

 𝑥  1  𝑚𝑜𝑙𝑒  𝑁𝐻!𝐶𝑙

6.02  𝑥  10!"  𝑓. 𝑢.𝑁𝐻!𝐶𝑙  𝑥  53.492  𝑔  𝑁𝐻!𝐶𝑙1  𝑚𝑜𝑙𝑒  𝑁𝐻!𝐶𝑙

= 3,467,000  𝑔  𝑁𝐻!𝐶𝑙  𝑂𝑅  3.467  𝑥  10!  𝑁𝐻!𝐶𝑙  

6. How  many  moles  of  Iron  III  Carbonate  are  there  in  9.032  x  1030  representative  particles  of  Iron  III  Carbonate?  

9.032  𝑥  10!"  𝑓.𝑢.𝐹𝑒!(𝐶𝑂!)!1  𝑥  

1  𝑚𝑜𝑙𝑒  𝐹𝑒!(𝐶𝑂!)!6.02  𝑥  10!"  𝑓.𝑢.𝐹𝑒!(𝐶𝑂!)!

 = 1.500  𝑥  10!  𝐹𝑒!(𝐶𝑂!)!  

7. How  many  representative  particles  are  there  in  490.2  grams  of  Copper  I  Oxide?  

490.2  𝑔  𝐶𝑢!𝑂1  𝑥  

1  𝑚𝑜𝑙𝑒  𝐶𝑢!𝑂  143.091  𝑔  𝐶𝑢!𝑂

 𝑥  6.02  𝑥  10!"  𝑓.𝑢.𝐶𝑢!𝑂

1  𝑚𝑜𝑙𝑒  𝐶𝑢!𝑂= 2.062  𝑥  10!"  𝑓.𝑢.𝐶𝑢!𝑂