Answer:
Therefore, given 0.375 moles of tungsten, there are approximately 2.2575 x 10^23 atoms present.
Step-by-step explanation:
To determine the number of atoms present in 0.375 moles of tungsten, we need to use Avogadro's number and the concept of molar mass.
1. Start by finding the molar mass of tungsten. The molar mass of an element is the mass of one mole of that element. The molar mass of tungsten is approximately 183.84 grams/mole.
2. Convert the given quantity of tungsten from moles to grams. Multiply the number of moles (0.375 moles) by the molar mass of tungsten (183.84 grams/mole). The result is 68.94 grams.
3. Next, use Avogadro's number, which states that there are 6.022 x 10^23 atoms in one mole of any substance. Divide the mass of tungsten in grams (68.94 grams) by the molar mass of tungsten (183.84 grams/mole) to find the number of moles. This gives us approximately 0.375 moles.
4. Finally, multiply the number of moles by Avogadro's number (6.022 x 10^23 atoms/mole) to find the number of atoms. Multiply 0.375 moles by 6.022 x 10^23 atoms/mole to get approximately 2.2575 x 10^23 atoms.