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- 1. Multiple Choice
Which of the following dimensional analysis setups will correctly convert 27.76g of Li to atoms of Li?ABCD - 2. Multiple ChoiceWhich of the following dimensional analysis setups will correctly convert 4.00x1023atoms of cobalt to moles of cobalt? How many moles of colbalt are there? Show your work.B : 0.664mol CoA: 2.41x1047mol CoA : 0.664ol CoB: 2.41x1047mol Co
- 3. Multiple ChoiceWhich of the following dimensional analysis setups will correctly convert 2.50 moles of sodium to grams of sodium?ABCD
- 4. Multiple ChoiceWhat is the molar mass of AuCl3? Show your work.96 g130 g232.5 g303.3 g
- 5. Multiple ChoiceWhat is the mass in grams of 5.90 mol C8H18 (molar mass = 114.232 g/mol)?.0512 g19.4 g674 g389 g
- 6. Multiple ChoiceHow many moles are in 16.94g of water (molar mass = 18.02 g/mol)?16.94 mol H2O0.9401 mol H2O305.3 mol H2O1.063 mol H2O
- 7. Multiple ChoiceBalance this equation:
__ FeS + __HCl --> __FeCl2 + __H2O1, 2, 1, 1It's already balanced2, 1, 2, 1None of these - 8. Multiple ChoiceHow many particles are in 13.5 grams of Beryllium?1.5 particles9 particles4x1023 particles9x1023 particles
- 9. Multiple ChoiceIf you are going from grams of Na to grams of NaCl, what unit label is going to be on the bottom of the first step?
2Na + Cl2 −−〉 2NaClGrams NaGrams NaClMoles NaMoles NaCl - 10. Multiple ChoiceThe number of molecules in a moleAvogadro's numberActual yield22.4 LStoichiometry
- 11. Multiple ChoiceWhat is the molar mass of H2O?6.02 x 102316 grams18 grams15.99999 grams
- 12. Multiple ChoiceHow many atoms are in 1 mole of NaCl?6.02 x 1023581117
- 13. Multiple ChoiceHow many moles are in 32 grams of Oxygen (O)?3214
- 14. Multiple ChoiceHow many grams are in 1.2 x 1024 molecules of CO?28 grams56 grams6.02 grams1.2 grams
- 15. 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
- 16. Multiple ChoiceWhat is the mass of 0.89 mol of CaCl2?111 grams0.008 grams98.9 gramsnone of the choices
- 17. Multiple ChoiceHow many steps are in a gram to molecule conversion?1234
- 18. Multiple ChoiceHow many steps are in a gram to mole conversion?1234
- 19. Multiple ChoiceIn chemistry, a "mole" is:The mass of an atoma large number used to count particlesbased on the volume of a substance
- 20. Multiple ChoiceWhat is the molar mass of C2H4O2?40g50g60g68g
- 21. Multiple ChoiceWhat is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__Na + __H2O --> __NaOH + __H22,2 --> 2,14,4 --> 4,11,2 --> 2,41,2 --> 2,1
- 22. Multiple Choice
What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?
__Ca + __H2O --> __Ca(OH)2 + __H2
2,1 --> 2,11,2 --> 1,11,2 --> 2,41,2 --> 2,1 - 23. Multiple ChoiceWhat is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__FeCl3 + __Ca(OH)2 --> __Fe(OH)3 + __CaCl24,3--> 2,13,2 --> 3,12,3 --> 2,22,3 --> 2,3
- 24. Multiple ChoiceIs this equation balanced?yesnoNot enough informationLeft side is balanced
- 25. Multiple ChoiceWhich problem is balanced?PbO2 + 2H2--> H2SO4SO2 + H20 --> H2SO42Na + 2H2O --> 2NaOH + H22Na + 2H2O --> 2NaOH + H
- 26. Multiple ChoiceWhich side of a chemical equation is the product side?Left (before the yields sign)Right (after the yields sign)
- 27. Multiple ChoiceFill in the blanks with coefficient:
PCl5+_ H2O→_ HCl+H3PO44, 51, 63, 82,2 - 28. Multiple ChoiceHow many atoms of carbon are in 6.00g of carbon?1.20x1024atoms C6.02x1023atoms C3.01x1023atoms C1.50x1023atoms C
- 29. Multiple ChoiceWhat is the molar mass of table salt (NaCl)?116.886 g/mol35.453 g/mol22.990 g/mol58.443 g/mol
- 30. Multiple ChoiceGiven 500.0 Liters of H2 gas, convert to molecules.6.74 x 1027 molecules H21.86 x 10-20 molecules H21.34 x 1025 molecules H23.71 x 10-23 molecules H2
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