13. How many atoms of oxygen will be found in the product(s) of the reaction?
Fe2O3 + 3H2SO4
3
12
4
15****
14. Use the table and equation to answer the question.
Element Atomic Mass (amu)
hydrogen 1
carbon 12
oxygen 16
CH4 + 2 O2 → CO2 + 2 H2O
The law of conservation of matter states that matter cannot be created nor destroyed. How does the balance equation above demonstrate this law?
The number of molecules, number of atoms, and mass of reactants and products are equal.
The number of molecules, number of atoms, and type of elements are equal.
The number of molecules, type of elements, and mass of reactants and products are equal. ****
The number of atoms, type of elements, and mass of reactants and prod
1.
Assuming the coefficients for Fe2O3 and 3H2SO4 do NOT change, then 15 is correct.
2.
The ATOMS on both sides are the same so I don't agree with your answer.
For example, in CaCO3 ==> CaO + CO2, you see the atoms on the left = atoms on th right but the number of molecules is not the same.
To determine the number of atoms of oxygen in the product(s) of the reaction Fe2O3 + 3H2SO4, you need to analyze the reaction and count the number of oxygen atoms on each side of the equation.
In the reaction Fe2O3 + 3H2SO4, there are 3 oxygen atoms in Fe2O3 and a total of 12 oxygen atoms in 3 molecules of H2SO4. The total number of oxygen atoms on the reactant side is 3 + 12 = 15.
Therefore, the correct answer is 15.
Now, let's address the second question regarding the balanced equation and the law of conservation of matter.
The balanced equation CH4 + 2 O2 → CO2 + 2 H2O demonstrates the law of conservation of matter by showing that the number of atoms, type of elements, and mass of reactants and products are equal.
In this equation, you can see that there is one carbon atom on both the reactant and product sides. Similarly, there are four hydrogen atoms on both sides.
Regarding oxygen, there are two oxygen atoms in each O2 molecule on the reactant side, which sum up to four. On the product side, there are two oxygen atoms in the CO2 molecule and four oxygen atoms in the 2 H2O molecules, totaling to six oxygen atoms.
Since the number of atoms, type of elements, and mass of reactants and products are equal in the balanced equation, it aligns with the law of conservation of matter.
Therefore, the correct answer is: The number of molecules, type of elements, and mass of reactants and products are equal.