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- 1. Multiple ChoiceFind the Molar Mass of:
Ga2(SO3)3280.75 g/mol400.83 g/mol379.65 g/mol480.93 g/mol - 2. Multiple ChoiceHow many particles are there in 31.8 moles?5.28 x 10-23 particles1.91 x 1025 particles5.28x 10-25 particles1.91 x 1022 particles
- 3. Multiple ChoiceHow many moles are 2.85 x 1020 atoms of iron?0. 0004moles1.7moles0.00moles473 moles
- 4. Multiple ChoiceHow many moles of copper are 4.57 x 1015 atoms of copper?8 x 10-9 moles2.75 x 10-33 moles8 x 109 moles2.75 x 1033 moles
- 5. Multiple ChoiceAvogadro's number of representative particles is equal to one_____.kilogramgramkelvinmole
- 6. Multiple ChoiceWhat is the molar mass of AuCl2?96 g130 g232.5 g267.87 g
- 7. Multiple ChoiceA mole of carbon disulfide contains 6.02 x 1023 _____.atomsformula unitsionsmolecules
- 8. Multiple ChoiceHow many particles are in a mole?602602 million602 moles6.02 x 1023
- 9. Multiple ChoiceDetermine the amount of moles in 4.50 x 1023 atoms of fluorine.9.03 x 1046 moles0.747 moles4.73 moles0.0131 moles
- 10. Multiple ChoiceDetermine the number of
atoms in
0.50 moles of zinc.3.01 x 1023 atoms4.15 x 10-24 atoms2.71 x 10-22 atoms303 atoms - 11. Multiple ChoiceWhat is the molar mass of CaCl2?24.31 g/ml111.21 g/mol59.76 g/mol70.90 g/mol
- 12. Multiple ChoiceConvert 1.5 moles of beryllium oxide to molecules25.01 molecules9.0 x 1023 molecules0.12 molecules1.80 x 1024 molecules
- 13. Multiple ChoiceFive moles of Cl2 has the same particles in five moles of O2TrueFalse
- 14. 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
- 15. 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
- 16. Multiple ChoiceHow to calculate molar mass of CO2?12+2x16 =4412+16=282x12+2x16=564+6=10
- 17. Multiple ChoiceHow many formula units are there in 5.5 moles potassium chloride?4.08 x 10-243.31 x 102433.110.98
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