Vhich of the following equations is correctly balanced?
cu(no3)3 + 2 feso4 → 2 fe(no3)2 + cr2(so4)3
2 cu(no3)3 + 2 feso4 → 2 fe(no3)2 + cr2(so4)3
2 ci(no3)3 + 3 feso4 → 3 fe(no3)2 + cr2(so4)3
3 cr(no3)3 + 2 feso4 → 3 fe(no3)2 + 2 cr2(so4)3

option 3.

2Cr(NO₃)₃ + 3 FeSO₄ → 3 Fe(NO₃)₂ + Cr₂(SO₄)₃

Explanation:

Balance Chemical Equation:

A balanced chemical equation is that in which the number of the reactant atoms equal to the number of the product atom.

For example if the oxygen at the reactant side is 4, the number of oxygen must be 4 on the product side.

Solution

Check each equation one by one

1. Cr(NO₃)₃ + 2 FeSO₄ → 2 Fe(NO₃)₂ + Cr₂(SO₄)₃

Number of atoms of Reactant:

Cr = 1

N = 3

O = 17

Fe = 2

S = 2

Number of atoms of Reactant:

Cr = 2

N = 4

O = 24

Fe = 2

S = 3

So this is not a balance equation as the atoms of the reactant atom not equal to the product atoms.

2. 2Cr(NO₃)₃ + 2 FeSO₄ → 2 Fe(NO₃)₂ + Cr₂(SO₄)₃

Number of atoms of Reactant:

Cr = 2

N = 6

O = 26

Fe = 2

S = 2

Number of atoms of Reactant:

Cr = 2

N = 4

O = 24

Fe = 2

S = 3

So this is not a balance equation as the atoms of the reactant atom not equal to the product atoms.

3.

2Cr(NO₃)₃ + 3 FeSO₄ → 3 Fe(NO₃)₂ + Cr₂(SO₄)₃

Number of atoms of Reactant:

Cr = 2

N = 6

O = 30

Fe = 3

S = 3

Number of atoms of Reactant:

Cr = 2

N = 6

O = 30

Fe = 3

S = 3

So this is a balance equation as the atoms of the reactant atom are equal to the product atoms.

Note** you write Cu and Cl instead of Cr,  So that was also corrected.

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

i just calculated it all out, and not including weekends, and all the different days off. as of this school year (2018-2019) students are spending 2198 hours in school this year