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- 1. Multiple Choice
Which contains more atoms, a mole of silver atoms or a mole of gold atoms?
mole of silver atoms
mole of gold atoms
they have the same number of atoms
- 2. Multiple Choice
Which has more mass, a mole of potassium or a mole of sodium?
mole of potassium
mole of sodium
they have the same mass
- 3. Multiple Choice
Which has more atoms, one mole of iron or one mole of zinc?
one mole of iron
one mole of zinc
they have the same number of atoms
- 4. Multiple Choice
Which has more mass, one mole of iron or one mole of zinc?
one mole iron
one mole zinc
they have the same mass
- 5. Multiple Choice
Calculate the mass of 5.22 mol He
20.9 g He
1.30 g He
8.6 x 10^22 atoms He
1.64 x 10^25 atoms He
- 6. Multiple Choice
Calculate the mass of 0.0455 mol Ni
2.67 g Ni
7.75 x 10^-4 g Ni
2.7 x 10^22 atoms Ni
7.56 x 1021 atoms Ni
- 7. Multiple Choice
Convert 3.50 mol Li to g Li
24.3 g Li
0.501 g Li
2.11 x 10^24 atoms Li
5.81 atoms Li
- 8. Multiple Choice
Determine the mass in grams of 1.33 x 10^22 mol of Sb
1.62 x 10^24 g Sb
1.09 x 10^20 g Sb
8.01 x 10^45 atoms Sb
2.21 x 10^23 atoms Sb
- 9. Multiple Choice
Convert 7.65 g Co to moles of Co
451 g2/mol Co
0.130 mol Co
0.129808427 g Co
451 mol Co
- 10. Multiple Choice
Determine the mass in grams of 4.75 x 1014 mol Pt
9.27 x 1016 g Pt
9.27 x 1016 atoms Pt
2.43 x 1012 g Pt
2.86 x 1036 g Pt
- 11. Multiple Choice
Which two of the following quantities are equal to 3.65 mol Mg?
88.7 g Mg
0.144 g Mg
2.20 x 1024 atoms Mg
2.20 x 1024 molecules Mg
6.02 x 1023 representative particles Mg
- 12. Multiple Choice
Which of the following are equivalent to 29.54 g Cr?
1536 mol Cr
0.5681 mol Cr
3.420 x 1023 atoms Cr
9.247 x 1026 atoms Cr
- 13. Multiple Choice
Which of the following are equivalent to 0.568 mol As?
29.54 g As
42.6 g As
3.42 x 1023 atoms As
9.25 x 1026 atoms As
- 14. Multiple Choice
Which of the following are true of a sample containing
3.54 x 1025 atoms P?
2.13 x 1049 mol P
58.8 mol P
21.3 mol P
30.974 g P
1820 g P
- 15. Multiple Choice
Convert 4.22 x 1015 atoms U to mass in grams.
7.01 x 10-9 mol U
2.54 x 1039 mol U
1.67 x 10-6 g U
606 g U
- 16. Multiple Choice
What is the mass in grams of 8.65 x 1025 atoms H
8.65 x 1025 g H
1.44 mol H
1.45 g H
145 g H
- 17. Multiple Choice
How many atoms in 25.8 g Hg?
0.129 mol Hg
5180 atoms Hg
7.74 x 1022 atoms Hg
3.12 x 1027 atoms Hg
- 18. Multiple Choice
How many atoms in 0.0340g Zn?
2.223 mol Zn
5.20 x 10-4 mol Zn
1.34 x 1024 atoms Zn
3.13 x 1020 atoms Zn
- 19. Multiple Choice
Determine the molar mass of HNO3
47.0 g/mol
63.0 g/mol
141.0 g/mol
189.0 g/mol
- 20. Multiple Choice
What is the molar mass of ammonium nitrate (NH4NO3)?
66.0 g/mol
80.0 g/mol
111.0 g/mol
253.0 g/mol
- 21. Multiple Choice
How many moles are in 100.0 g of dinitrogen oxide (N2O)?
2.272 mol N2O
6.25 mol N2O
7.14 mol N2O
44.013 mol N2O
- 22. Multiple Choice
How many moles are in 100.0 g of methanol (CH3OH)?
2.272 mol CH3OH
3.125 mol CH3OH
17.40 mol CH3OH
32.00 mol CH3OH
- 23. Multiple Choice
What is the mass of 4.50 x 10-2 mol CuCl2?
6.05 g CuCl2
4.45 g CuCl2
134.5 g CuCl2
605.3 g CuCl2
- 24. Multiple Choice
What is the mass of 1.25 x 102 mol Ca(OH)2?
2.19 g Ca(OH)2
9.26 x 103 g Ca(OH)2
92.6 g Ca(OH)2
74.08 g Ca(OH)2
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