what is a chemical equation? it’s how we describe chemical reactions, using chemical symbols and…

what is a chemical equation? it’s how we describe chemical reactions, using chemical symbols and formulas.\nhere’s an example (chemical equation for rust)\nthe arrow represents the “reaction taking place” or “yields”\nreactant\nproduct\n4fe + 3o₂ → 2fe₂o₃\nchemical symbol\ncoefficient – describes the quantity of the element or formula that follows it.\nsubscript – the number of atoms of the chemical symbol (element) to which the subscript is attached.\ncheck for understanding\n1. how many iron (fe) atoms are present within the reactant? ________\n2. how many ‘o₂’ molecules are present within the reactant? ________\n3. how many total atoms of oxygen are present within the reactant? ________\n4. how many molecules of fe₂o₃ (rust) are present within the product? ________\n5. how many iron (fe) atoms are present within the product? ________\n6. how many oxygen (o) are present within the product? ________\n7. does the number of atoms of each element on the reactant side match that of the product side? ________

what is a chemical equation? it’s how we describe chemical reactions, using chemical symbols and formulas.\nhere’s an example (chemical equation for rust)\nthe arrow represents the “reaction taking place” or “yields”\nreactant\nproduct\n4fe + 3o₂ → 2fe₂o₃\nchemical symbol\ncoefficient – describes the quantity of the element or formula that follows it.\nsubscript – the number of atoms of the chemical symbol (element) to which the subscript is attached.\ncheck for understanding\n1. how many iron (fe) atoms are present within the reactant? ________\n2. how many ‘o₂’ molecules are present within the reactant? ________\n3. how many total atoms of oxygen are present within the reactant? ________\n4. how many molecules of fe₂o₃ (rust) are present within the product? ________\n5. how many iron (fe) atoms are present within the product? ________\n6. how many oxygen (o) are present within the product? ________\n7. does the number of atoms of each element on the reactant side match that of the product side? ________

Answer

Explanation:

Step1: Determine Fe atoms in reactant

The coefficient of Fe in the reactant is 4, so there are 4 Fe atoms.

Step2: Determine O₂ molecules in reactant

The coefficient of O₂ in the reactant is 3, so there are 3 O₂ molecules.

Step3: Determine total oxygen atoms in reactant

Each O₂ molecule has 2 oxygen atoms, and there are 3 O₂ molecules. So the total number of oxygen atoms is 3×2 = 6.

Step4: Determine Fe₂O₃ molecules in product

The coefficient of Fe₂O₃ in the product is 2, so there are 2 Fe₂O₃ molecules.

Step5: Determine Fe atoms in product

Each Fe₂O₃ molecule has 2 Fe atoms, and there are 2 Fe₂O₃ molecules. So the number of Fe atoms is 2×2=4.

Step6: Determine oxygen atoms in product

Each Fe₂O₃ molecule has 3 oxygen atoms, and there are 2 Fe₂O₃ molecules. So the number of oxygen atoms is 2×3 = 6.

Step7: Check atom - balance

On the reactant side: 4 Fe atoms and 6 O atoms. On the product side: 4 Fe atoms and 6 O atoms. The number of atoms of each element on the reactant side matches that of the product side.

Answer:

  1. 4
  2. 3
  3. 6
  4. 2
  5. 4
  6. 6
  7. Yes