In 3 formula units of (NH4)2HAsO4, there are 6 nitrogen (N) atoms, 24 hydrogen (H) atoms, 3 arsenic (As) atoms, and 12 oxygen (O) atoms. Each formula unit contains 2 nitrogen atoms, 8 hydrogen atoms, 1 arsenic atom, and 4 oxygen atoms. Therefore, multiplying by 3 gives the total number of atoms for each element.
In one formula unit of aluminum sulfate, Al₂(SO₄)₃, there are a total of 14 atoms. This includes 2 aluminum (Al) atoms, 3 sulfur (S) atoms, and 12 oxygen (O) atoms (4 oxygen atoms for each of the 3 sulfate groups).
There are 6 hydrogen atoms, 3 phosphorus atoms, and 4 oxygen atoms in the formula H3PO4.
In the chemical formula 3Co2, the "3" represents the number of moles or units of the compound Co2. This means there are three units of cobalt (Co) combined in the formula, indicating a total of six cobalt atoms (since each Co2 contains two cobalt atoms). The subscript "2" indicates that each unit of Co2 consists of two cobalt atoms.
The formula unit for aluminum oxide is usually considered to be Al2O3 (even though the bonding may vary in different allotropes). Using this formula unit, each one contains 5 total atoms, found by adding all the subscripts in the formula.
Water (H2O) has 3 atoms in each formula unit.
If you mean the 3 in the formula AgNO3, it refers to the fact that silver nitrate has 3 oxygen atoms in each formula unit.
There are a total of 12 oxygen atoms in two calcium carbonate formula units. Each formula unit of calcium carbonate (CaCO3) contains 3 oxygen atoms, so for two formula units, there would be 6 oxygen atoms in each unit, totaling 12 oxygen atoms.
Each formula unit of Fe2(C2O4)3 contains 15 atoms (2 Fe atoms, 6 C atoms, and 7 O atoms). Therefore, 5 formula units would contain a total of 75 atoms (5 formula units x 15 atoms per formula unit).
The formula unit for calcium nitride is Ca3N2. To find the total number of atoms, you add the number of atoms in each element together: 3 calcium atoms + 2 nitrogen atoms = 5 atoms in total.
Al2(SO4)3 So: 2x Aluminium 3x Sulphur 12x Oxygen
There are three oxygen atoms present in a formula unit of Aluminum Hydroxide (Al(OH)3).
There are 9 atoms of oxygen in one formula unit of aluminum nitrate (Al(NO3)3).
Aluminium trichloride has 4 atoms in the formula unit.
The formula unit for calcium nitride is Ca3N2. That would be 3 atoms of calcium and 2 atoms of nitrogen, for a total of 5 atoms in a formula unit.
1 formula unit of aluminum sulfate has the formula Al2(SO4)3. So there are 2 atoms of aluminum, 3 atoms of sulfur and 12 atoms of oxygen in 1 formula unit of aluminum sulfate. There are no molecules of aluminum sulfate. They are called formula units.
Al(OH)3 has three hydrogens. So there are six hydrogens in 2Al(OH)3