If 4 moles of aluminum react with 3 moles of oxygen, how many moles of aluminum

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Question: If 4 moles of aluminum react with 3 moles of oxygen, how many moles of aluminum oxide are formed?

Options:

Correct Answer: 2 moles

Solution:

The balanced equation is 4Al + 3O2 → 2Al2O3, which shows that 4 moles of Al produce 2 moles of Al2O3.

If 4 moles of aluminum react with 3 moles of oxygen, how many moles of aluminum oxide are formed?

If 4 moles of aluminum react with 3 moles of oxygen, how many moles of aluminum oxide are formed?

Step 1: Write down the balanced chemical equation for the reaction between aluminum and oxygen. The equation is 4Al + 3O2 → 2Al2O3.
Step 2: Identify how many moles of aluminum (Al) are used in the reaction. In this case, it is 4 moles.
Step 3: Look at the balanced equation to see how many moles of aluminum oxide (Al2O3) are produced from 4 moles of aluminum. The equation shows that 4 moles of Al produce 2 moles of Al2O3.
Step 4: Conclude that if 4 moles of aluminum react, then 2 moles of aluminum oxide are formed.

Stoichiometry – The calculation of reactants and products in chemical reactions based on balanced equations.
Mole Ratios – Understanding the ratios of moles of reactants and products as derived from a balanced chemical equation.