Calculating the Number of Atoms in 64 g of Sulfur

Oct 13, 2025 by wbrum.org 45 views

Introduction

In chemistry, understanding the number of atoms present in a given mass of an element is crucial for various calculations and applications. The Avogadro's number, which is $6.02 \times 10^{23}$ atoms per mole, is a fundamental constant used to relate the number of atoms to the mass of an element. In this article, we will explore how to calculate the number of atoms in 64 g of sulfur (S) using Avogadro's number.

Understanding Avogadro's Number

Avogadro's number is a fundamental constant in chemistry that relates the number of atoms or molecules to the mass of a substance. It is defined as the number of units (atoms or molecules) in one mole of a substance. One mole of any substance contains $6.02 \times 10^{23}$ units, which is Avogadro's number. This number is a universal constant and is used to calculate the number of atoms or molecules in a given mass of a substance.

Calculating the Number of Atoms in 64 g of Sulfur

To calculate the number of atoms in 64 g of sulfur, we need to know the molar mass of sulfur. The molar mass of sulfur is 32 g/mol, which means that one mole of sulfur weighs 32 g. Now, we can use Avogadro's number to calculate the number of atoms in 64 g of sulfur.

Step 1: Calculate the Number of Moles of Sulfur

To calculate the number of moles of sulfur, we need to divide the given mass (64 g) by the molar mass of sulfur (32 g/mol).

moles = mass / molar mass
moles = 64 g / 32 g/mol
moles = 2 mol

Step 2: Calculate the Number of Atoms

Now that we have the number of moles, we can use Avogadro's number to calculate the number of atoms.

atoms = moles \* Avogadro's number
atoms = 2 mol \* 6.02 \times 10^{23} atoms/mol
atoms = 1.204 \times 10^{24} atoms

Conclusion

In conclusion, the number of atoms in 64 g of sulfur is $1.204 \times 10^{24}$ atoms. This can be calculated using Avogadro's number and the molar mass of sulfur.

Comparison with Answer Choices

Let's compare our answer with the given answer choices:

A. $64\left(6.02 \times 10^{23}\right$ ] atoms B. $32\left(6.02 \times 10^{23}\right$ ] atoms C. $6.02 \times 10^{23}$ atoms D. $2\left(6.02 \times 10^{23}\right$ ] atoms

Our answer, $1.204 \times 10^{24}$ atoms, is closest to answer choice D, $2\left(6.02 \times 10^{23}\right$ ] atoms. However, our answer is not exactly equal to answer choice D, but it is the closest among the given options.

Final Answer

The final answer is D. $2\left(6.02 \times 10^{23}\right$ ] atoms.

Introduction

In our previous article, we explored how to calculate the number of atoms in 64 g of sulfur (S) using Avogadro's number. In this article, we will answer some frequently asked questions related to this topic.

Q1: What is Avogadro's number?

A1: Avogadro's number is a fundamental constant in chemistry that relates the number of atoms or molecules to the mass of a substance. It is defined as the number of units (atoms or molecules) in one mole of a substance. One mole of any substance contains $6.02 \times 10^{23}$ units, which is Avogadro's number.

Q2: How do I calculate the number of atoms in a given mass of a substance?

A2: To calculate the number of atoms in a given mass of a substance, you need to know the molar mass of the substance and Avogadro's number. You can use the following formula:

atoms = moles \* Avogadro's number
moles = mass / molar mass

Q3: What is the molar mass of sulfur?

A3: The molar mass of sulfur is 32 g/mol, which means that one mole of sulfur weighs 32 g.

Q4: How many atoms are in 64 g of sulfur?

A4: To calculate the number of atoms in 64 g of sulfur, we need to divide the given mass (64 g) by the molar mass of sulfur (32 g/mol) and then multiply the result by Avogadro's number.

moles = mass / molar mass
moles = 64 g / 32 g/mol
moles = 2 mol
atoms = moles \* Avogadro's number
atoms = 2 mol \* 6.02 \times 10^{23} atoms/mol
atoms = 1.204 \times 10^{24} atoms

Q5: Which answer choice is closest to the correct answer?

A5: Our answer, $1.204 \times 10^{24}$ atoms, is closest to answer choice D, $2\left(6.02 \times 10^{23}\right$ ] atoms.

Q6: What is the significance of Avogadro's number?

A6: Avogadro's number is a universal constant that relates the number of atoms or molecules to the mass of a substance. It is used to calculate the number of atoms or molecules in a given mass of a substance.

Q7: Can I use Avogadro's number to calculate the number of atoms in a given volume of a substance?

A7: Yes, you can use Avogadro's number to calculate the number of atoms in a given volume of a substance. However, you need to know the density of the substance and the molar volume of the substance.

Q8: How do I calculate the molar volume of a substance?

A8: To calculate the molar volume of a substance, you need to know the molar mass of the substance and the density of the substance. You can use the following formula:

molar volume = molar mass / density

Q9: Can I use Avogadro's number to calculate the number of atoms in a given mass of a substance that is not a perfect sphere?

A9: Yes, you can use Avogadro's number to calculate the number of atoms in a given mass of a substance that is not a perfect sphere. However, you need to know the shape and size of the substance.

Q10: What are some common applications of Avogadro's number?

A10: Avogadro's number has many common applications in chemistry, including calculating the number of atoms in a given mass of a substance, calculating the number of molecules in a given volume of a substance, and calculating the molar volume of a substance.

Conclusion

In conclusion, Avogadro's number is a fundamental constant in chemistry that relates the number of atoms or molecules to the mass of a substance. It is used to calculate the number of atoms or molecules in a given mass of a substance and has many common applications in chemistry.