One molecule of bromine (Br) and two molecules of potassium chloride (KCI) combine in a reaction. How many atoms are in the products? (1 point)
O six
O four
O three
O two
The reaction equation is:
Br + 2KCl -> 2KBr + Cl2
In this reaction, one molecule of bromine (Br) combines with two molecules of potassium chloride (KCl) to produce two molecules of potassium bromide (KBr) and one molecule of chlorine (Cl2).
Since each molecule of KBr contains one bromine atom and each molecule of Cl2 contains two chlorine atoms, the total number of atoms in the products is:
1 bromine atom (from KBr) + 2 chlorine atoms (from Cl2) = 3 atoms
Therefore, the correct answer is three (O three).
To determine the number of atoms in the products, we need to first calculate the total number of atoms in each reactant and then add them together.
The reactants are one molecule of bromine (Br) and two molecules of potassium chloride (KCI).
Bromine (Br) is a diatomic molecule, meaning it consists of two bromine atoms bonded together. Therefore, there are 2 bromine atoms in one molecule of bromine (Br).
Potassium chloride (KCI) is composed of one potassium (K) atom and one chlorine (CI) atom. Since we have two molecules of potassium chloride (KCI), we have:
2 molecules x (1 potassium atom + 1 chlorine atom) = 2 potassium atoms + 2 chlorine atoms.
Therefore, the total number of atoms in the reactants is:
2 bromine atoms + 2 potassium atoms + 2 chlorine atoms = 6 atoms.
Hence, the correct answer is six atoms (6).
To determine the number of atoms in the products of the reaction, we need to first calculate the number of atoms in each molecule and then multiply it by the number of molecules present.
The molecular formula for bromine is Brâ‚‚, indicating that there are two bromine atoms in each molecule.
The molecular formula for potassium chloride is KCl, which suggests there is one potassium atom (K) and one chlorine atom (Cl) in each molecule.
Now, let's calculate the number of atoms in the products:
For bromine (Br), there is 1 molecule, and each molecule contains 2 atoms. So, the total number of bromine atoms is 1 * 2 = 2 atoms.
For potassium chloride (KCl), there are 2 molecules, and each molecule contains 1 potassium atom and 1 chlorine atom. So, the total number of potassium atoms is 2 * 1 = 2 atoms, and the total number of chlorine atoms is 2 * 1 = 2 atoms.
Adding up the number of atoms in the products, we have 2 bromine atoms + 2 potassium atoms + 2 chlorine atoms = 6 atoms.
Therefore, the correct answer is "O six" – there are six atoms in the products.