How many moles of bromine atoms are in 8.0x10^20 bromine molecules?
how many molecules of br2 react with 1.11x10 20 molecules of f2
To determine the number of moles of bromine atoms in 8.0x10^20 bromine molecules, we need to convert the given quantity of molecules to moles.
First, we need to determine the number of bromine atoms present in one bromine molecule. Bromine, represented by the chemical symbol Br, has a molar mass of approximately 79.9 grams/mol.
Avogadro's number, which is 6.022x10^23 atoms/mol, represents the number of atoms in one mole of any substance.
So, first, we'll find the number of moles in 8.0x10^20 bromine molecules:
8.0x10^20 molecules * (1 mol / 6.022x10^23 molecules) ≈ 0.13 moles
Thus, there are approximately 0.13 moles of bromine molecules in 8.0x10^20 bromine molecules.
To determine how many moles of bromine atoms are in 8.0x10^20 bromine molecules, we need to take into account Avogadro's number. Avogadro's number is the number of atoms or molecules in one mole of any substance, and it is approximately 6.022x10^23 atoms/molecules per mole.
First, we need to convert the given number of bromine molecules to moles using the following steps:
Step 1: Identify the conversion factor:
1 mole of bromine molecules = 6.022x10^23 bromine molecules
Step 2: Set up the conversion equation:
8.0x10^20 bromine molecules * (1 mole / 6.022x10^23 bromine molecules)
Step 3: Perform the calculation:
8.0x10^20 / 6.022x10^23 = 0.00133 moles
Therefore, there are approximately 0.00133 moles of bromine molecules in 8.0x10^20 bromine molecules.
Now, since we want to find the number of moles of bromine atoms, we need to use the fact that each bromine molecule contains 2 bromine atoms.
Step 4: Multiply the number of moles of bromine molecules by the number of bromine atoms per molecule:
0.00133 moles * 2 bromine atoms/molecule = 0.00266 moles
Therefore, there are approximately 0.00266 moles of bromine atoms in 8.0x10^20 bromine molecules.
1 mole = 6.02x10^23
A bromine molecule has the formula Br2.
Multiply the number of Br2 molecules by 2 to get the number of atoms of bromine.
Divide the number of atoms by 6.02x10^23 atoms/mole to get moles of Br atoms