list the numbers and types of atoms represented by these chemical formulas.
a.Fe2O3
b.KMnO4
c.CH3
d.NH4NO3
a. Fe2O3 represents two iron (Fe) atoms and three oxygen (O) atoms.
b. KMnO4 represents one potassium (K) atom, one manganese (Mn) atom, and four oxygen (O) atoms.
c. CH3 represents one carbon (C) atom and three hydrogen (H) atoms.
d. NH4NO3 represents one nitrogen (N) atom, four hydrogen (H) atoms, one oxygen (O) atom, and three nitrogen (N) atoms.
To determine the number and types of atoms represented by chemical formulas, we need to understand the notation used to represent elements.
Chemical formulas use the symbols of elements to represent the types of atoms present in a compound. In addition to symbols, subscripts are used to indicate the number of each type of atom. Let's analyze each chemical formula you provided:
a. Fe2O3
To determine the number and types of atoms in Fe2O3, we look at the subscripts. In this case, Fe has a subscript of 2, indicating that there are two iron (Fe) atoms. Oxygen (O) has a subscript of 3, meaning there are three oxygen atoms. Therefore, the chemical formula Fe2O3 represents two iron atoms and three oxygen atoms.
b. KMnO4
In KMnO4, K represents potassium (K), Mn represents manganese (Mn), and O represents oxygen (O). The subscripts indicate the number of each atom. K has a subscript of 1, so there is one potassium atom. Mn has a subscript of 1, indicating one manganese atom. Lastly, O has a subscript of 4, meaning there are four oxygen atoms. Therefore, the chemical formula KMnO4 represents one potassium atom, one manganese atom, and four oxygen atoms.
c. CH3
For CH3, C represents carbon (C) and H represents hydrogen (H). The subscript 3 indicates that there are three hydrogen atoms. Therefore, the chemical formula CH3 represents one carbon atom and three hydrogen atoms.
d. NH4NO3
In NH4NO3, N represents nitrogen (N), H represents hydrogen (H), and O represents oxygen (O). The subscripts indicate the number of each atom. N has a subscript of 2, meaning there are two nitrogen atoms. H, within the ammonium ion (NH4+), has a subscript of 4, signifying four hydrogen atoms. Finally, O has a subscript of 3, indicating three oxygen atoms. Therefore, the chemical formula NH4NO3 represents two nitrogen atoms, four hydrogen atoms, and three oxygen atoms.
No.
a. 2 iron (III) and 3 Oxygen atoms.
b. 1 K (potassium), 1 Mn(manganese), 4 O atoms.
You get the idea.