Editing revision 22 of Answer To Mid-Year Exam Review Problems

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1. 2,3,3,3,4,5,2,5,2,6 
2. 3.42E-4kg, 5.02E-2km, 5.002E2cm, 2.350E3g, 1.02E1 m3, 2E6 years 
3. 3,090,000,000g , 20,000cm, 0.555L, 0.0002443km, 1020mL, 48g/mL 
 
Calculate the molar mass of each of the following:

1. 46g C2H5O1H1/ 1mole C2H5O1H1 
 
2. 1116g Ca1Cl2/ 1mole Ca1Cl2 
 
3. 106g Na2C1O3/ 1mole Na2C1O3 
 
4. 52g C1H2F2/ 1mole C1H2F2 
 
5. 41g Li1(O1H1)2/ 1mole Li1(O1H1)2 
 
6. 331g Pb1(N1O3)2/ 1mole Pb1(N1O3)2 
 
7. 148g Na1Cl1 
 
8. 20.mole H2O1 
 
9. 2.759 mole C4H10 
 
10. 3.76E24 molecules H2O1 
 
11. 190 L He @ <nowiki>STP</nowiki> 
 
Give the correct formula for each of the following ionic compounds: 
a. Pb1S1 
b. Cu1Cl2 
c. Ca1(O1H1)2 
d. Ca1O1 
e. Al1Cl3 
f. Cu1(N1O3)1 
g. Li2(C1O3)1 
h. K2S1 
i. Fe3P2 
j. Ag1(N1O3)1 
 
Give the correct name for each of the following ionic compounds 
a. Calcium fluoride 
b. Gallium hydroxide 
c. Iron <nowiki>(III)</nowiki> chloride 
d. Copper <nowiki>(II)</nowiki> bromide 
e. Copper <nowiki>(I)</nowiki> oxide 
f. Sodium sulfide 
g. Barium sulfate 
h. Iron <nowiki>(II)</nowiki>oxide 
i. Lithium carbonate 
j. Beryllium nitride

Give the correct name for each of the following covalent compounds 
 
1. Dinitrogen monoxide 
2. Sulfur trioxide 
3. Oxygen Trifluoride 
4. Carbon dioxide 
5. Diphosphorus pentaoxide 
 
Give the correct formula for each of the following covalent compounds 
 
1. N2F6 
2. C1O1 
3. C3F8 
4. S2P3 
5. N1O2

Thermal Energy Problems 
 
1a. 1.3E3 cals 
b. exothermic, reaction (system) gave heat to the water 
c. delta H is negative if the reaction is the system and delta H is positive if the system is the water. 
2. 58degC

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