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- 1. Multiple Choice
Which of the following statements regarding the mole is INCORRECT?
A mole is a unit of quantity equal to 6.02 x 1023 particles.
The number of particles in a mole is known as Avogadro’s number.
A mole of particles of an element is numerically equal to the atomic mass of the element.
none of the above
- 2. Multiple Choice
The mass of one mole of an element is equal to
its atomic number from the periodic table, but in amus.
its atomic mass from the periodic table, but in amus.
its atomic mass from the periodic table, but in grams.
its atomic number from the periodic table, but in grams.
- 3. Multiple Choice
What is the molar mass of PbSO4?
303.27 g/mol
255.27 g/mol
163.87 g/mol
372.27 g/mol
- 4. Multiple Choice
How many formula units are in 2.5 moles of NaCl?
1.5 x1024 formula units
1.5 formula units
4.2 formula units
4.2 x10-24 molecules
- 5. Multiple Choice
Shivani measures out 6.0 moles of epsom salt (MgSO4) to put in her bath. How many grams of MgSO4 went in the bath?
3.6 x 1024 g
720 g
0.050 g
340 g
- 6. Multiple ChoiceHow many molecules are there in 31.8 moles of water?5.28 x 10-23 molecules1.91 x 1025 molecules5.28x 10-251.91 x 1022
- 7. Multiple Choice
Determine the mass of 4.20 moles of C6H12
353 g
0.0499 g
337 g
2.53 x 1024 g
- 8. Multiple Choice
How many grams are in 1.2 moles of neon?
0.059 grams
7.2 x 1023 grams
2.0 x 10-24 grams
24 grams
- 9. Multiple ChoiceHow many moles are in 3.01 x 1022 atoms of magnesium?0.05 moles1.81 x 1046 moles5.00 x 1021 moles5 moles
- 10. Multiple ChoiceWhat is the mass of 0.89 mol of CaCl2?111 grams0.008 grams98.9 gramsnone of the choices
- 11. Multiple Choice
48.86 g of cobalt is equal to how many moles of cobalt?
2879 moles
8.291 moles
.8291 moles
.829 moles
- 12. Multiple Choice
Convert 86.235 g of diphosphorus pentaoxide to moles.
12240 moles
1.8747 moles
.608 moles
.60755 moles
- 13. Multiple ChoiceWhich conversion factor should be used to solve the following, "How many moles are in 28 grams of CO2?"1 mol = 22.4 L1 mol = 44.01 g1 mol = 6.02x1023 atomsmore than one
- 14. Multiple ChoiceWhat is the volume occupied by 1 mole of any gas?44.8 L22.4 L16.8 L20.4 L
- 15. Multiple Choice
How many moles are in a 18 L tank of nitrogen gas?
0.9 moles
1 mole
0.8 moles
0.75 moles
- 16. Multiple Choice
How many moles are in 89 liters of water vapor?
1993.6 moles
4.93 moles
1.478 moles
3.97 moles
- 17. Multiple ChoiceHow many moles are 2.85 x 1020 atoms of iron?4.73 x 10-4 moles1.72 x 104 moles1.72 x 10-42 moles4.73 x 104 moles
- 18. Multiple ChoiceA mole of carbon disulfide contains 6.02 x 1023 _____.atomsformula unitsionsmolecules
- 19. Multiple ChoiceThe number 6.02 x 1023 is called...Obama's numberBohr's numberTrump's numberAvogadro's number
- 20. Multiple ChoiceHow do we get mass from moles?multiply by avogadro's numbermultiply by molar massdivide by avogadro's numberdivide by molar mass
- Answer choicesTagsAnswer choicesTags