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- 1. Multiple ChoiceIn chemistry, a "mole" is:The mass of an atoma large number used to count particlesbased on the volume of a substance
- 2. Multiple ChoiceHow many atoms of iodine are in a mole of iodine?5363.55g126.96.02 x 1023
- 3. Multiple ChoiceThe number 6.02 x 1023 is called...Obama's numberBohr's numberTrump's numberAvogadro's number
- 4. Multiple ChoiceHow many particles would be in 8.4 moles of Octane (C8H18)?5.77 x 10235.04 x 10245.77 x 10265.04 x 1023
- 5. Multiple ChoiceWhich has more molecules?1 mole H2O1 mole Al(OH)31 mole NaClThere are all the same
- 6. Multiple ChoiceWhat is the mole used for?To measure the amount of grams in a substanceTo measure the amount of atoms or molecules in a substanceTo measure the amount of energy in a substanceTo measure the amount of bonding in a substance
- 7. Multiple Choice
How many molecules are there in 5.5 moles potassium chloride?
4.08 x 10-24
3.31 x 1024
33.11
0.98
- 8. Multiple ChoiceHow many students are there in 31.8 moles of students?5.28 x 10-23 students1.91 x 1025 students5.28x 10-25 students1.91 x 1022 students
- 9. 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
- 10. Multiple ChoiceHow many moles of copper are 4.57 x 1015 atoms of copper?7.59 x 10-9 moles2.75 x 10-33 moles7.59 x 109 moles2.75 x 1033 moles
- 11. Multiple ChoiceA mole of carbon disulfide contains 6.02 x 1023 _____.atomsformula unitsionsmolecules
- 12. Multiple ChoiceDetermine the amount of moles in 4.50 x 1023 atoms of fluorine.9.03 x 1046 moles0.757 moles4.73 moles0.0131 moles
- 13. Multiple Choice
Determine the number of atoms in 0.50 moles of zinc.
0.30 x 1024 atoms
4.15 x 10-24 atoms
2.71 x 10-22 atoms
303 atoms
- 14. Multiple ChoiceFive moles of Cl2 has the same particles in five moles of O2TrueFalse
- 15. Multiple ChoiceConvert 1.5 moles of beryllium oxide to molecules25.01 molecules9.0 x 1023 molecules0.12 molecules1.80 x 1024 molecules
- 16. Multiple ChoiceWhich list of number of atoms in Mg(NO2)2 is right?Mg : 1--NO : 2Mg : 1-- N : 6--O: 2Mg : 1-- N: 1-- O: 2Mg : 1-- N: 2-- O: 4
- 17. Multiple ChoiceWhich list of number of atoms in K3PO3 is right?K : 3--PO : 3K :3--P : 1--O: 3K : 3-- P: 4--O: 1K : 3-- P: 5--O: 4
- 18. Multiple ChoiceHow many molecules are in 9.4 moles of AlCl3?5.665.66x10240.7051.25x1023
- 19. Multiple ChoiceHow many moles are in 6 x 1023 molecules of H2O?126600
- 20. Multiple ChoiceHow many molecules are in 2.5 mol of NaCl?1.51x10231464.151.51x1024
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