1. Calculate the mass of iron needed to make 16.25g of iron chloride (3 marks)

2Fe + 3Cl2 → 2FeCl3

5.595 g Fe

General Formulas and Concepts:

Chemistry - Stoichiometry

Explanation:

Step 1: Define

16.25 g FeCl₃ (Iron III Chloride)

RxN:   2Fe + 3Cl₂ → 2FeCl₃

Step 2: Identify Conversions

Molar Mass of Fe - 55.85 g/mol

Molar Mass of Cl - 35.45 g/mol

Molar Mass of FeCl₃ - 55.85 + 3(35.45) = 162.2 g/mol

Step 3: Stoichiometry

= 5.59533 g Fe

Step 4: Check

We are given 4 sig figs. Follow sig fig rules and round.

5.59533 g Fe ≈ 5.595 g Fe

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be