One molecule of bromine (Br2) and two molecules of potassium chloride (KCl) combine in a reaction. How many atoms are in the products?(1 point)
Responses
two
two
four
four
six
six
three
The correct answer is six.
In the reaction, one molecule of bromine (Br2) combines with two molecules of potassium chloride (KCl) to form two molecules of potassium bromide (KBr) and one molecule of chlorine gas (Cl2).
Each molecule of potassium bromide (KBr) contains one potassium atom (K) and one bromine atom (Br), so the two molecules of potassium bromide contain a total of two potassium atoms and two bromine atoms.
The molecule of chlorine gas (Cl2) contains two chlorine atoms (Cl).
Therefore, the products of the reaction contain a total of two potassium atoms, two bromine atoms, and two chlorine atoms, which gives a total of six atoms.
To determine the number of atoms in the products, we first need to identify the chemical formula of the products formed when bromine (Br2) and potassium chloride (KCl) react.
The reaction between bromine and potassium chloride can be represented as:
Br2 + 2KCl → 2KBr + Cl2
From the balanced equation, we can see that two molecules of bromine (Br2) react with two molecules of potassium chloride (KCl) to produce two molecules of potassium bromide (KBr) and one molecule of chlorine gas (Cl2).
Each molecule of bromine (Br2) contains 2 bromine atoms (Br), and each molecule of potassium chloride (KCl) contains 1 potassium atom (K) and 1 chlorine atom (Cl).
Therefore, in the products, there are:
2 bromine atoms in 2 molecules of potassium bromide (2 x 2 = 4 bromine atoms)
1 chlorine atom in 1 molecule of chlorine gas (Cl2)
Adding these together, we have 4 bromine atoms + 1 chlorine atom = 5 atoms in the products.
So the correct answer is: six (since the question asks for the total number of atoms in the products).
To determine the number of atoms in the products of the reaction, we need to calculate the total number of atoms present in each reactant and then add them together.
The molecular formula for bromine is Br2, indicating that there are two bromine atoms per molecule. Multiply this by the number of molecules given, which is 1, to get a total of 2 bromine atoms.
Similarly, the molecular formula for potassium chloride is KCl, which indicates one potassium atom (K) and one chlorine atom (Cl) per molecule. Multiply this by the number of molecules given, which is 2, to get a total of 2 potassium atoms and 2 chlorine atoms.
Adding the number of bromine atoms, potassium atoms, and chlorine atoms together, we have:
2 bromine atoms + 2 potassium atoms + 2 chlorine atoms = 6 atoms
Therefore, the correct answer is six.