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Chem one sem 2 review 2019
The document contains a series of chemistry questions and multiple choice answers about chemical reactions and stoichiometry. This includes questions about the meaning of coefficients in a chemical equation, calculating products of a reaction given moles of reactants, determining the reactant left in excess and leftover amounts after a reaction, identifying an antacid, predicting precipitates from a double displacement reaction, counting oxygen atoms in a molecule, and identifying spectators in a chemical reaction.
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Chem one sem 2 review 2019
- 1.
- 2. What do theRED numbers 2H2O -> 2H2 + O2 stand for in this reaction??
- 3. What do theRED numbers 2H2O -> 2H2 + O2 stand for in this reaction?? A. MOLES B. Grams C. molecules D. ATOMS
- 4. What do theRED numbers 2H2O -> 2H2 + O2 stand for in this reaction?? A. MOLES B. Grams C. molecules D. ATOMS
- 5. In this reactionhow much PRODUCT is made when you react 6 moles N2 + 6 moles H2?? N2 + 3H2 2NH3 A. 8 B. 12 C. 4 D. 9
- 6. In this reactionhow much PRODUCT is made when you react 6 moles N2 + 6 moles H2?? N2 + 3H2 2NH3 A. 8 B. 12 C. 4 D. 9
- 7. In this reactionhow much PRODUCT is made when you react 6 moles N2 + 12 moles H2?? N2 + 3H2 2NH3 A. 8 B. 12 C. 4 D. 9
- 8. In this reactionhow much PRODUCT is made when you react 6 moles N2 + 12 moles H2?? N2 + 3H2 2NH3 A. 8 B. 12 C. 4 D. 9
- 9. What is INEXCESS when you react 12moles N2 + 12 moles H2?? N2 + 3H2 2NH3 A. nitrogen B. hydrogen C. oxygen D. false
- 10. What is INEXCESS when you react 12moles N2 + 12 moles H2?? N2 + 3H2 2NH3 A. nitrogen B. hydrogen C. oxygen D. false
- 11. How much ofthe thing IN EXCESS is LEFT OVER when you react 12moles N2 + 12 moles H2?? N2 + 3H2 2NH3 A. 8 moles nitrogen left over B. 8 moles hydrogen left over C. No moles anything left over D. Impossible to answer
- 12. How much ofthe thing IN EXCESS is LEFT OVER when you react 12moles N2 + 12 moles H2?? N2 + 3H2 2NH3 A. 8 moles nitrogen left over B. 8 moles hydrogen left over C. No moles anything left over D. Impossible to answer
- 13. How much ofthe thing IN EXCESS is LEFT OVER when you react 6 moles N2 + 9 moles H2?? N2 + 3H2 2NH3 A. no moles left over B. 6 moles hydrogen left over C. 3 moles nitrogen left over D. 6 moles nitrogen left over
- 14. How much ofthe thing IN EXCESS is LEFT OVER when you react 6 moles N2 + 9 moles H2?? N2 + 3H2 2NH3 A. no moles left over B. 6 moles hydrogen left over C. 3 moles nitrogen left over D. 6 moles nitrogen left over
- 15. Why do weeat food? A. its yummy B. It heats us up C. Allows us to do work D. Produces enzymes and DNA
- 16. Why do weeat food? A. its yummy B. It heats us up C. Allows us to do work D. Produces enzymes and DNA
- 17. What is anantacid? A. its yummy B. It heats us up C. It is a base D. It neutralizes acid
- 18. What is anantacid? A. its yummy B. It heats us up C. It is a base D. It neutralizes acid
- 19. Predict the PRECIPITATEin this reaction NaOH + CaCl2 ? A. NaCl B. Ca(OH)2 C. NaCa D. OHCl
- 20. Predict the PRECIPITATEin this reaction NaOH + CaCl2 ? A. NaCl B. Ca(OH)2 C. NaCa D. OHCl
- 21. How many oxygenatoms in 2-pentanol? A. 2 B. 3 C. 4 D. 1
- 22. How many oxygenatoms in 2-pentanol? A. 2 B. 3 C. 4 D. 1
- 23. How many oxygenatoms in 2-pentanol? A. 2 B. 3 C. 4 D. 1
- 24. WE do notparticipate in a reaction? A. ions B. moles C. spectators D. precipitates
- 25. WE do notparticipate in a reaction? A. ions B. moles C. spectators D. precipitates