Balancing chemical equation review, G10

What is a coefficient?

• The small number on the right of the chemical symbol.
• The large number in front of a chemical formula.
• The number in between the chemical symbols.
• The number behind a chemical formula.

How many elements are in C₆H₁₂O₆?

• 1
• 2
• 3
• 4

How many HCl molecules do you need to balance this equation? 
Mg +  __HCl --->  MgCl₂ + H₂

• 1
• 2
• 3
• 4

Is this balanced?
Al + O₂ → 2Al₂O₃

• Yes
• No

Which number should go in the blank?
Al(NO₃)₃ + _  NaOH -> Al(OH)₃ + 3 NaNO₃

• 1
• 2
• 3
• 0

Indicate the respective coefficients needed to balance the chemical equation.

N₂O₅(s) + NO(g) → NO₂(g)

Tags

112.35.c.8.E

Indicate the respective coefficients needed to balance the chemical equation.

Mg(s) + Cr₂(SO₄)₃(aq) → MgSO₄(aq) + Cr(s)

Tags

112.35.c.8.E

Indicate the respective coefficients needed to balance the chemical equation.

NaCl(aq) + H₂O(l) → NaOH(aq) + H₂(g) + Cl₂(g)

Tags

112.35.c.8.E

Is the following equation balanced?

Al + O₂ ---> 2Al₂O₃

• YES

• NO

Is the following equation balanced?

4Fe + 3O₂ ---> 2Fe₂O₃

• YES

• NO