Senior One No 6

7 Questions | Total Attempts: 54

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Senior One No 6 - Quiz


Questions and Answers
  • 1. 
    Suppose you were given the following problem: A 50.6 g sample of Mg(OH)2 is reacted with 45.0 g of HCl according to the reaction: Mg(OH)2 + 2 HCl --> MgCl2 + 2 H2O What is the theoretical yield of MgCl2?
  • 2. 
    Methane, CH4, burns in oxygen to give carbon dioxide and water according to the following equation: CH4 + 2 O2 ------> CO2 + 2 H2O In one experiment, a mixture of 0.250 mol of methane was burned in 1.25 mol of oxygen in a sealed steel vessel. Find the limiting reactant, if any, and calculate the theoretical yield, (in moles) of water.
  • 3. 
    The number of moles of carbon dioxide which contain 8 g of oxygen is
    • A. 

      0.5 mol

    • B. 

      0.20mol

    • C. 

      0.40 mol

    • D. 

      0.25 mol

  • 4. 
    The total no of ions present in 111 g of cacl2 is
    • A. 

      1 mol

    • B. 

      2 mol

    • C. 

      3mol 

    • D. 

      4 mol

  • 5. 
    Which has maximum number of atoms ?
    • A. 

       24g of c (12) 1

    • B. 

      B) 56g of Fe (56)

    • C. 

      27g of Al (27)

    • D. 

      108g of Ag (108)  

  • 6. 
    One mole of P4 molecules contain
    • A. 

      1 molecule of p

    • B. 

      4 molecule of p

    • C. 

      (c) 1/4  x 6.022 1023 atoms of p

    • D. 

      (d) 24.088 x 1023 atoms of p

  • 7. 
    One atomic mass unit is equivalent to
    • A. 

      (a) 1.66 x 10-27

    • B. 

      (b) 1.66 x10-27 kg

    • C. 

      D) 1.66 x10-27 g

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