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What is the relative formula mass of iron chloride, FeCl₃? Relative atomic mass (Aᵣ): Cl = 35.5 Fe = 55.8. - OCR Gateway - GCSE Chemistry - Question 5 - 2023 - Paper 1

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What-is-the-relative-formula-mass-of-iron-chloride,-FeCl₃?--Relative-atomic-mass-(Aᵣ):-Cl-=-35.5--Fe-=-55.8.-OCR Gateway-GCSE Chemistry-Question 5-2023-Paper 1.png

What is the relative formula mass of iron chloride, FeCl₃? Relative atomic mass (Aᵣ): Cl = 35.5 Fe = 55.8.

Worked Solution & Example Answer:What is the relative formula mass of iron chloride, FeCl₃? Relative atomic mass (Aᵣ): Cl = 35.5 Fe = 55.8. - OCR Gateway - GCSE Chemistry - Question 5 - 2023 - Paper 1

Step 1

Calculate the mass of Iron (Fe)

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Answer

The relative atomic mass of iron (Fe) is given as 55.8.

Step 2

Calculate the mass of Chlorine (Cl)

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Answer

Iron chloride contains three chlorine atoms. The relative atomic mass of chlorine is 35.5, so the total mass from chlorine is: 3imes35.5=106.5.3 imes 35.5 = 106.5.

Step 3

Add the masses together

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Answer

Now, we sum the total masses of iron and chlorine: 55.8+106.5=162.3.55.8 + 106.5 = 162.3.

Step 4

Identify the correct answer

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Answer

The relative formula mass of iron chloride (FeCl₃) is 162.3, which corresponds to option C.

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