Chemistry practice 2nd six weeks

Determined whether the following equation is balanced or unbalanced. Ag + O_{2 --->} 2Ag₂O

• Balanced

• Unbalanced

Determine whether the following equations is balanced or unbalanced. H₄ + O₂ ---> 2H₂O

• Balanced

• Unbalanced

Determine whether the following equation is balanced or unbalanced. 4P +5O_{2 --->} 2P₂O₅

• Balanced

• Unbalanced

Determine whether the following equation is balanced or unbalanced. H₂ + Br₂ ---> 2HBr

• Balanced

• Unbalanced

Determine whether the following equation is balanced or unbalanced. 2Fe + 3Cl₂ ---> FeCl₃

• Balanced

• Unbalanced

Determine whether the following equations is balanced or unbalanced. S₈ + O₂ ---> 8SO₃

• Balanced

• Unbalanced

In order for an equation to be balanced, there must be ...

• an equal amount of atoms on both sides

• a greater mass on the product side

• a greater mass on the reactant side

• elements with the same atomic # on both sides

Which coefficients would balance this chemical equation? _Fe₂O₃ ---> _Fe + _O₂

• 2,1,2

• 2,4,3

• 1,1,1

• 1,3,2

Which coefficients would balance this chemical equation? _K + _Cl₂ ---> _KCl

• 1,1,1

• 1,2,2

• 1,1,2

• 2,1,2

Which of the following equations is balanced?

• P₄ + 3O₂ ---> 2P₂O₃

• N₄ + 3F₂ ---> 2NF₃

• 2LiF + Br₂ ---> 2LiBr + F₄