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Exam (elaborations)

Chem 103 Lab Exam Questions And Answers

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  • Course
  • Chem 103
  • Institution
  • Chem 103

If we plot the amount of Na2SO4 formed against the mols of NaOH added what does the intersection of the two regions indicate, and where is the intersection ~ the stoichiometric point representing where the point where amount of NaOH and H2SO4 are in stoichiometric proportions i.e neither a...

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  • August 8, 2024
  • 15
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Chem 103
  • Chem 103
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Chem 103 Lab Exam
Questions And Answers

Concentrated acids or bases are stored in...


✓~ fume hoods




If we spill a large quantity of acid or base how can we clean it up


✓~ HazChem mixture, or sodium bicarbonate and water




Formula for sodium bicarbonate


✓~ NaHCO3




Concentrated acids when mixed with water evolve...


✓~ heat




mass balances are precise to plus/minus...


✓~ 0.0015g

, Where is the hottest part of a flame


✓~ near the center, top of the blue portion




What happens when the air gas mixture begins to burn before it reaches the

top of the burner, when using the bunsen burner?


✓~ Barrel will become very hot and flame will turn green, shut off gas supply and

allow burner to cool




The cylinder chosen for measuring should not have...


✓~ a volume more than 10x volume to be measured




precision of a buret


✓~ plus/minus 0.02mL




The volumetric flask enables you to...


✓~ prepare solutions for a specified concentration




Sig digs for H3O+ M when pH is:


2.0

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