The Language Of Chemistry

What is the result of balancing the equation where aluminum reacts with acetic acid?

• 
  Aluminum acetate and hydrogen gas are produced

• Aluminum hydroxide and carbon dioxide are produced

• 
  None of the above

• Aluminum oxide and hydrogen gas are produced

Select the correct coefficients that will balance this equation:
__Zn +__ HCl --> __ZnCl₂ + __H₂

• 
  1,1,2,1

• 
  1,1,1,2

• 
  1,2,1,1

• 2,1,1,1

Balance this equation:

CF₄ + Br₂ → CBr₄ + F₂

• 3,1,2,1

• 2,2,2,2

• 
  1,2,1,2

• 3,2,1,2

Balance this equation.
_SnO₂ +_H₂-->_Sn +_H₂O

• 
  1,1,2,1

• 1,2,1,1

• 1,2,1,2

• 1,2,2,1

Balance the equation:

PCl₅ + ___ H₂O → ___ HCl + H₃PO₄

• 4, 5

• 
  1, 6

• 3, 8

• 2,2

Which of the following equations are correctly balanced?

• 
  12CO₂ + H₂O --->

  C₆H₁₂O₆ + O₂

• CO₂ + H₂O ---> 3C₆H₁₂O₆ + O₂

• CO₂ + 9H₂O ---> C₆H₁₂O₆ + O₂

• 6CO₂ + 6H₂O ---> C₆H₁₂O₆ + 6O₂

KNO₃ --> KNO₂ + O₂
What coefficients are needed to balance the reaction?

• 
  2, 2, 1

• 
  2, 3, 2

• 1, 2, 2

• 1, 3, 1

The molecular formula for Ammonium carbonate is

• (NH₄ )₂CO₃

• 
  

  (NH₄ )CO₃

• (NH₄ )₂CO

Name the elements present in Ammonia

• nitrogen

• both nitrogen and hydrogen

• hydrogen

Most suitable element and most widely accepted standard unit for the measurement of atomic mass

• 
  

  Carbon

• Oxygen

• 
  Nitrogen