Mass of this sample = 3.2 g
1. Iron is...
a) An element composed of atoms
b) An element composed of diatomic molecules
c) An ionic compound
d) Made from more than one type of atom
2. How many moles of iron are in the nail?
1 is a.
2. mols = grams/atomic mass = ?
Iron is a diatomic element
To answer these questions, we need to understand the concept of moles and atomic mass.
1. Iron is…
To determine whether iron is an element composed of atoms, an element composed of diatomic molecules, an ionic compound, or made from more than one type of atom, we can refer to the periodic table. Iron (Fe) is an element and is composed of atoms, so the correct answer is option a) An element composed of atoms.
2. How many moles of iron are in the nail…
To calculate the number of moles of iron in the nail, we'll use the mass of the sample and the molar mass of iron (Fe).
The molar mass of iron is found on the periodic table and is approximately 55.845 g/mol. To find the number of moles, we will use the formula:
Number of moles = Mass of sample / Molar mass
Since the mass of the sample is given as 3.2 g, we can substitute these values into the formula:
Number of moles = 3.2 g / 55.845 g/mol
Calculating this division, we find:
Number of moles ≈ 0.057 moles
So, there are approximately 0.057 moles of iron in the nail.