Answer:
3
Explanation:
Balancing the equation:
Original equation: Al + H2SO4 → AL2(SO4)3 + H2
We see that in aluminum in AL2(SO4)3 there is a subscript 2.
We put a 2 in the front of the reactant Al.
We also see a subscript 3 behind (SO4).
We add a 3 in front of H2SO4.
Now we have to balance the H2 on both sides. We add a 3 in front of the H2 on the right as there is 3 H2 molecules on the left.
2Al + 3H2SO4 → AL2(SO4)3 + 3H2
I hope it helps :)
The coefficient of hydrogen is 3
The numbers placed in front of formulas to balance equations are called coefficients, and they multiply all the atoms in a formula.
Balancing the equation:
Given, the equation: Al + H2SO4 → AL2(SO4)3 + H2
We see that in aluminum in AL2(SO4)3 there is a subscript 2.
We put a 2 in the front of the reactant Al.
We also see a subscript 3 behind (SO4).
We add a 3 in front of H2SO4.
Now we have to balance the H2 on both sides. We add a 3 in front of the H2 on the right as there are 3 H2 molecules on the left.
2Al + 3H2SO4 → AL2(SO4)3 + 3H2
A balanced equation is an equation for a chemical reaction in which the number of atoms for each element in the reaction and the total charge is the same for both the reactants and the products.
Learn more about balanced equations here: https://brainly.com/question/17056447
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