Stoichiometry Review

What is the mole ratio of CO₂ to C₆H₁₂O₆ in the following chemical equation?   C₆H₁₂O₆ + 6 O₂ --> 6 CO₂ + 6 H₂O 

• 6:1

• 1:6

• 1:1

• 6:6

Tags

NGSS.HS-PS1-7

4Fe + 3O₂ -> 2Fe₂O₃
How many grams of iron(III) oxide would be formed if 200g Fe completely reacted with oxygen?

• 143 g

• 286 g

• 400 g

• 572 g

Tags

NGSS.HS-PS1-7

For the reaction represented by the equation 2Na + Cl₂ → 2NaCl, how many grams of sodium chloride can be produced from 115 grams of sodium?

• 292.5 g

• 150.3 g

• 234.9 g

• 300.7 g

Using the following equation:
2Al(s) + 3Cl₂(g) → 2AlCl₃(s)
How many moles of aluminum chloride can be produced from 4 moles of aluminum? 

• 4 moles AlCl₃

• 6 moles AlCl₃

• 2 moles AlCl₃

• 8 moles AlCl₃

Tags

NGSS.HS-PS1-7

Using the following equation:
2Fe(s) + 3H₂O(l) → Fe₂O₃(s) + 3H₂(g)
How many moles of H₂O are needed to produce 4 moles of Fe₂O₃? 

• 6 moles H₂O

• 12 moles H₂O

• 9 moles H₂O

• 8 moles H₂O

Tags

NGSS.HS-PS1-7

4 KClO₃ (s) --> 4KCl (s) +6 O₂ (g)  
8.00 moles of KClO₃ will produce how many grams of O₂?

• 384 g of O₂

• 192 g of O₂

• 256 g O₂

Tags

NGSS.HS-PS1-7

 CaC₂(s) + 2H₂O(l)   -->   C₂H₂(g)   + Ca(OH)₂(aq)
how many grams of C₂H₂ would be produced from 3.20 moles of CaC₂?

• 83.2 g

• 64.0 g

• 128 g

• 256 g

Use the following equation:
2NaIO₃(aq) + 12HI(aq) --> 6I₂(s) + 2NaI(aq) + 6H₂O(l)
How many moles of iodine can be made from 3.27 moles of NaIO₃?

• 9.81 moles I₂

• 6.54 moles I₂

• 3.27 moles I₂

• 13.08 moles I₂

Tags

NGSS.HS-PS1-7

Using the following equation:
2C₄H₁₀(g) + 13O₂(g) --> 8CO₂(g) + 10H₂O(l)
How many grams of oxygen gas are needed to react with 58.0 grams of butane?

• 208.0 g O₂

• 290.0 g O₂

• 400.0 g O₂

• 190.0 g O₂

What is the molar mass of C₂H₅OH?

• 46.08 g/mol

• 46.07 g/mol

• 46.06 g/mol

• 46.05 g/mol