One gram of tungsten has 3.28 × 1021 atoms,
and each tungsten atom has 74 electrons.
How many electrons are contained in 9.00 g
of tungsten?
Answer in units of electrons
To determine the number of electrons in 9.00 g of tungsten, we can use the given information about the number of atoms in 1 gram of tungsten and the number of electrons per atom.
Step 1: Calculate the number of atoms in 9.00 g of tungsten.
We are given that 1 gram of tungsten has 3.28 × 10^21 atoms. To find the number of atoms in 9.00 g of tungsten, we need to multiply this value by 9.00.
Number of atoms in 9.00 g of tungsten = (3.28 × 10^21 atoms/g) × 9.00 g = 2.952 × 10^22 atoms
Step 2: Calculate the number of electrons in 9.00 g of tungsten.
Since each tungsten atom has 74 electrons, the number of electrons in 9.00 g of tungsten can be found by multiplying the number of atoms by the number of electrons per atom.
Number of electrons in 9.00 g of tungsten = (2.952 × 10^22 atoms) × 74 electrons/atom
= 2.177 × 10^24 electrons
Therefore, there are 2.177 × 10^24 electrons in 9.00 g of tungsten.