Stoichiometry Mole to Mole

WO₃ + H₂ --> W + H₂O
What coefficient goes in front of H₂?

• 1

• 2

• 3

• 4

For the Balanced Reaction: 3 Mg + 1 Fe₂O₃ → 3 MgO + 2 Fe; What is the Ratio of moles of MgO to moles Fe?

• 3mol Mg / 2 mol Fe

• 2 mol Mg/ 3 mol Fe

• 1 mol Fe/ 2 mol Fe

• 3 mol MgO / 2 mol Fe

Tags

NGSS.HS-PS1-7

Which of the following represent a mole ratio between silver nitrate and copper(II) nitrate in the following reaction:
2AgNO₃ + Cu --> Cu(NO₃)₂ + 2Ag

• 2 mol AgNO₃ / 2 mol Ag

• 2 mol Ag / 2 mol AgNO₃ 

• 2 mol AgNO₃ / 2 mol Cu(NO₃)₂

• 2 mol AgNO₃ / 1 mol Cu(NO₃)₂

Tags

NGSS.HS-PS1-7

2H₂   +   O₂  →  2H₂O
How many moles of water can be produced if 8 moles H₂ are used?

• 4 moles

• 8 moles

• 16 moles

• 2 moles

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Using the following equation:
Fe₂O₃(s) + 3H₂(g) → 2Fe(s) + 3H₂O(l)
How many moles of iron can be made from 3 moles of Fe₂O₃?

• 6 moles Fe

• 4 moles Fe

• 2 moles Fe

• 1 moles Fe

2 C₂H₆ + 7 O₂ → 4 CO₂ + 6 H₂O

Ethane (C₂H₆) combusts in the above reaction. What is the mole ratio of carbon dioxide to water?

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• 
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Tags

NGSS.HS-PS1-7

Using the balanced chemical equation:
Mg + 2 HCl --> MgCl₂ + H₂

How many grams of MgCl₂ is produced if 4.67 moles of HCl react?

• 219 g MgCl₂

• 4.67 g MgCl₂

• 94 g MgCl₂

Tags

NGSS.HS-PS1-7

Using the balanced chemical equation: 4NH₃ + 3O₂ --> 2N₂ + 6H₂O Determine the amount of grams of N₂ is produced if 4.03 moles of NH₃ react?

• 28.0 g N₂

• 56.4 g N₂

• 2.02 g N₂

Tags

NGSS.HS-PS1-7

Using the balanced chemical equation:

2C₄H₁₀ + 13O₂ --> 10H₂O + 8CO₂

Calculate the number of grams of C₄H₁₀ needed to produce 5.12 moles of CO₂.

• 58.0 g C₄H₁₀

• 2.56 g C₄H₁₀

• 74.2 g C₄H₁₀

Tags

NGSS.HS-PS1-7

The coefficients in a chemical equation represent which type of ratio?

• mass to mass ratio

• mole to mole ratio

• mass to mole ratio

• mole to mass ratio