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Answer Key for Practicing the Mole Chemistry Problems, Lecture notes of Chemistry

Continental Theological SeminaryChemistry

The answers to odd numbered problems in a chemistry textbook focusing on calculating masses, moles, and molecules of various elements and compounds. It includes calculations for aluminum, iodine, chlorine, iron, phosphorus, magnesium, lead, sulfur, hydrogen chloride, sodium carbonate, sugar, calcium carbonate, water, hydrogen sulfide, and ammonia.

Typology: Lecture notes

2021/2022

Uploaded on 08/05/2022

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Chemistry-1 Practicing the Mole - - Odd Problem Answer Key Page 1
Practicing the Mole - - Even Problems Answer Key
Calculate the mass in grams of each of the following:
2. 8.00 moles of aluminum 6. 7.00 moles of iodine (I2)
4. 2.00 x 102 moles of chlorine (Cl2) 8. 9.20 moles of iron
Calculate the number of moles of atoms in each of the following:
10. 281 g of iron 14. 93.0 g of phosphorus
12. 72.0 g of magnesium 16. 1035 g of lead
Calculate the number of atoms in each of the following:
18. 5.40 moles of iron 20. 10.0 moles of titanium
8.00 mol 26.98 g
1 mol
= 216 g Al
7.00 mol 253.8 g
1 mol
= 1,780 g I2
200. mol 70.90 g
1 mol
= 14,200 g Cl2
9.20 mol 55.85 g
1 mol
= 514 g Fe
281 g 1 mol
55.85 g
= 5.03 mol Fe
= 3.00 mol P
72.0 g 1 mol
24.31 g
= 2.96 mol Mg
= 4.995 mol Pb
5.40 mol 6.022 x 1023 atoms
1 mole
= 3.25 x 1024 atoms Fe
10.0 mol 6.022 x 1023 atoms
1 mole
= 6.02 x 1024 atoms Ti
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Practicing the Mole - - Even Problems Answer Key

Calculate the mass in grams of each of the following:

  1. 8.00 moles of aluminum 6. 7.00 moles of iodine (I 2 )
  2. 2.00 x 10 2 moles of chlorine (Cl 2 ) 8. 9.20 moles of iron Calculate the number of moles of atoms in each of the following:
  3. 281 g of iron 14. 93.0 g of phosphorus
  4. 72.0 g of magnesium 16. 1035 g of lead Calculate the number of atoms in each of the following:
  5. 5.40 moles of iron 20. 10.0 moles of titanium 8.00 mol 26.98 g 1 mol = 216 g Al 7.00 mol 253.8 g 1 mol = 1,780 g I 2
  6. mol 70.90 g 1 mol = 14,200 g Cl 2 9.20 mol 55.85 g 1 mol = 514 g Fe 281 g 1 mol 55.85 g = 5.03 mol Fe 93.0 g 1 mol 30.97 g = 3.00 mol P 72.0 g 1 mol 24.31 g = 2.96 mol Mg 1035 g 1 mol 207.2 g = 4.995 mol Pb 5.40 mol 6.022 x 10 23 atoms 1 mole = 3.25 x 10 24 atoms Fe 10.0 mol 6.022 x 10 23 atoms 1 mole = 6.02 x 10 24 atoms Ti

Calculate the number of moles of atoms in each of the following:

  1. 9.03 x 10 23 atoms of S
  2. 1.204 x 10 24 atoms of Na Calculate the number of molecules in each of the following:
  3. 24 grams of ozone (O 3 )
  4. 96 grams of sulfur (S 8 ) Calculate the mass in grams of each of the following:
  5. 12.0 moles of HCl 34. 40.0 moles of Na 2 CO 3
  6. 7.50 moles of sugar (C 12 H 22 O 11 )
  7. 8.20 moles of CaCO 3 = 1.50 mol S 9.03 x 10 23 atoms 1 mole 6.022 x 10 23 atoms = 1.999 mol Na 1.204 x 10 24 atoms 1 mole 6.022 x 10 23 atoms = 3.0 x 10 23 molecules O 3 24 g 1 mole 6.022 x 10 23 molecules 48.0 g 1 mole = 2. 3 x 10 23 molecules S 8 96 g 1 mole 6.022 x 10 23 molecules 25 6.53 g 1 mole = 43 7 g HCl 12.00 mol 36.45 g 1 mole = 4,240 g Na 2 CO 3 40.00 mol 105.99 g 1 mole = 2,570 g sugar 7.50 mol 342.34 g 1 mole = 821 g CaCO 3 8.20 mol 100.09 g 1 mole