Chemistry

10th

grade

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Mole & Stoich. & some review

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60 questions

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  • 1. Multiple Choice
    15 minutes
    1 pt
    Balance the following reaction :
     
    CaC₂(s)   +   H₂O(l)   -->   C₂H₂(g)   +   Ca(OH)₂(aq)
    1,2,2,2
    1,2,1,1
    2,1,1,1
    2,1,2,1
  • 2. Multiple Choice
    15 minutes
    1 pt
    How many particles (atoms) would be in 8.4 moles of Octane (C8H18)?
    5.77 x 1023
    5.04 x 1024
    5.77 x 1026
    5.04 x 1023
  • 3. Multiple Choice
    15 minutes
    1 pt
    How many atoms are in 3.5 moles of arsenic atoms?
    5.8 x 10-24
    7.5 x 101
    2.1 x 1024
    1.7 x 1023
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