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5 questions
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  • Q1

    What balanced chemical equation contains the correct products(s) for the reaction of solid Rb with Cl2 gas?

    2Rb + 3Cl2 → 2RbCl + 2Cl2

    Rb + Cl2 → RbCl2

    Rb + Cl2 → RbCl + Cl

    2Rb + Cl2 → 2RbCl

    30s
  • Q2

    In the chemistry lab, Juanita adds solid KCO3 to a test tube and heats it until a gas is given off and a solid remains. Which of the following balanced chemical equations contains the correct products for this reaction?

    K2CO3 → KCO + O2

    K2CO3 → K2O + CO2

    K2CO3 → 2K  + CO2 + O

    K2CO3 → 2KO2 + CO

    30s
  • Q3

    During chemistry class, Lisa adds Zn(NO3)2 to a beaker. To this beaker, she adds Cu, Al, Fe, and Ag.

    A reaction occurs. Which of the following are products to this reaction?

    Zn + Cu(NO3)2

    Zn + AgNO3

    Zn + Al(NO3)3

    Zn + Fe(NO3)2

    30s
  • Q4

    What type of reaction is this?

    K2S + NaCl → ?

    Single Replacement

    Decomposition

    Double Replacement

    Synthesis

    30s
  • Q5

    What type of reaction is this?

    Al + CuCl2 → ?

    Single Replacement

    Synthesis

    Double Replacement

    Decomposition

    30s

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