Question
21 Write the balanced equation from the words. Make sure to check for diatomic elements, and check the charges on ionic compounds before you balance Iron burnsin air to form a black solid, iron (III) oxide,the coefficient for Iron is C 1 2 4 3 1 point
Answer
4.7
(190 Votes)
Rose
Veteran · Tutor for 9 years
Answer
The balanced chemical equation is: ###
The coefficient for Iron (Fe) is 4.
Explanation
## Step1:First, we need to identify the reactants and products in the given word equation. The reactant is iron (Fe) and the product is iron (III) oxide (Fe2O3). The word "burns in air" indicates that oxygen (O2) is also a reactant. ## Step2:Next, we write the unbalanced chemical equation. Iron reacts with oxygen to form iron (III) oxide: ###
## Step3:Now, we need to balance the equation. The principle of conservation of mass states that the number of atoms of each element must be the same on both sides of the equation. We notice that there are 2 iron atoms in the product side and only 1 on the reactant side, so we put a coefficient of 2 in front of Fe. Similarly, there are 3 oxygen atoms in the product side and 2 on the reactant side, so we put a coefficient of 3/2 in front of O2. However, since we cannot have a fraction as a coefficient in a balanced chemical equation, we multiply all the coefficients by 2 to get rid of the fraction. ## Step4:Finally, we double-check the balanced equation to ensure that the number of atoms of each element is the same on both sides.