Final answer:
To find the number of particles in 5.0 mL of Fe, we can use the formula (mass of substance / molar mass) x Avogadro's number. Assuming the molar mass of Fe is 55.85 g/mol, the number of particles in 5.0 mL of Fe is approximately 5.41 x 10²² particles.
Step-by-step explanation:
The question asks how many particles are in 5.0 mL of Fe. To answer this question, we need to know the molar mass (M) of Fe. If we assume that the molar mass of Fe is 55.85 g/mol, we can use the formula:
Number of particles = (mass of substance / molar mass) x Avogadro's number
In this case, we have 5.0 mL of Fe, which we can assume is equal to 5.0 g (since the density of Fe is approximately 1.0 g/mL).
Substituting the values into the formula:
(5.0 g / 55.85 g/mol) x 6.022 x 10²³ particles/mol = 5.41 x 10²² particles