Please help :) thank you
1 answer:
Answer:
4Fe + 3O₂ → 2Fe₂O₃
Explanation:
The chemical reaction is given as:
Fe + O₂ → Fe₂O₃
To balance an equation implies that the number of atoms and moles must be conserved.
using the coefficients a,b and c, let use a mathematical approach to balance the expression;
aFe + bO₂ → cFe₂O₃
Conserving Fe: a = 2c
O: 2b = 3c
let c = 1, a = 2 , b =
multiply through by 2 ;
a = 4, b = 3 and c = 2
4Fe + 3O₂ → 2Fe₂O₃
You might be interested in
Answer:
Explanation:
We know we will need a balanced chemical equation with masses and molar masses, so, let's gather all the information in one place.
You don't tell us what the reaction is, but we can solve the problem so long as we balance the OH.
M_r: 58.32
Mg(OH)₂ + … ⟶ … + 2HOH
m/g: 58.3
(a) Moles of Mg(OH)₂
(b) Moles of H₂O
The molar ratio is 2 mol H₂O = 1 mol Mg(OH)₂.
The reaction will form of water.
Answer: The balanced equation is .
Explanation:
The given reaction equation is as follows.
Number of atoms present on reactant side are as follows.
- Li = 1
- H = 1
= 1
Number of atoms present on product side are as follows.
- Li = 1
- H = 2
To balance this equation, multiply Li by 2 and by 2 on reactant side. Also, multiply
by 2 on product side.
Hence, the equation can be rewritten as follows.
Now, number of atoms present on reactant side are as follows.
- Li = 2
- H = 2
Number of atoms present on product side are as follows.
- Li = 2
- H = 2
As there are same number of atoms on both reactant and product side. Hence, the equation is now balanced.
Thus, we can conclude that the balanced equation is .