How Much Mass Does 1 Mol Of O 2 O_2 O 2 ​ Gas Have?A. 15.99 × ( 6.02 × 10 23 ) G 15.99 \times (6.02 \times 10^{23}) \, \text{g} 15.99 × ( 6.02 × 1 0 23 ) G B. 15.99 × 2 G 15.99 \times 2 \, \text{g} 15.99 × 2 G C. 15.99 G D. 2 × ( 6.02 × 10 23 ) G 2 \times (6.02 \times 10^{23}) \, \text{g} 2 × ( 6.02 × 1 0 23 ) G

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Introduction

In chemistry, understanding the mass of a substance is crucial for various calculations and applications. One of the fundamental concepts in chemistry is the mole, which represents a specific amount of a substance. In this article, we will explore the mass of 1 mol of O2O_2 gas and discuss the correct answer among the given options.

What is a Mole?

A mole is a unit of measurement that represents 6.02 x 10^23 particles of a substance. This number is known as Avogadro's number and is a fundamental constant in chemistry. The mole is used to express the amount of a substance in terms of its mass, which is a critical concept in chemistry.

Calculating the Mass of 1 Mol of O2O_2 Gas

To calculate the mass of 1 mol of O2O_2 gas, we need to know the molar mass of oxygen gas. The molar mass of oxygen gas is 15.99 g/mol. This means that 1 mol of oxygen gas has a mass of 15.99 g.

Understanding the Options

Now, let's analyze the given options:

A. 15.99×(6.02×1023) g15.99 \times (6.02 \times 10^{23}) \, \text{g}

B. 15.99×2 g15.99 \times 2 \, \text{g}

C. 15.99 g

D. 2×(6.02×1023) g2 \times (6.02 \times 10^{23}) \, \text{g}

Analyzing Option A

Option A is incorrect because it multiplies the molar mass of oxygen gas by Avogadro's number. This is incorrect because Avogadro's number represents the number of particles in 1 mol of a substance, not the mass of the substance.

Analyzing Option B

Option B is incorrect because it multiplies the molar mass of oxygen gas by 2. This is incorrect because the molar mass of oxygen gas is already 15.99 g/mol, and multiplying it by 2 would give a mass of 31.98 g/mol, which is not the correct answer.

Analyzing Option C

Option C is correct because it states that 1 mol of oxygen gas has a mass of 15.99 g, which is the correct answer.

Analyzing Option D

Option D is incorrect because it multiplies Avogadro's number by 2, which is not relevant to the calculation of the mass of 1 mol of oxygen gas.

Conclusion

In conclusion, the correct answer is option C, which states that 1 mol of oxygen gas has a mass of 15.99 g. This is because the molar mass of oxygen gas is 15.99 g/mol, and 1 mol of a substance has a mass equal to its molar mass.

Key Takeaways

  • A mole is a unit of measurement that represents 6.02 x 10^23 particles of a substance.
  • The molar mass of oxygen gas is 15.99 g/mol.
  • 1 mol of a substance has a mass equal to its molar mass.
  • Avogadro's number represents the number of particles in 1 mol of a substance, not the mass of the substance.

Frequently Asked Questions

Q: What is a mole? A: A mole is a unit of measurement that represents 6.02 x 10^23 particles of a substance.

Q: What is the molar mass of oxygen gas? A: The molar mass of oxygen gas is 15.99 g/mol.

Q: How do I calculate the mass of 1 mol of a substance? A: To calculate the mass of 1 mol of a substance, you need to know its molar mass and multiply it by 1.

References

Glossary

  • Mole: A unit of measurement that represents 6.02 x 10^23 particles of a substance.
  • Molar mass: The mass of 1 mol of a substance.
  • Avogadro's number: The number of particles in 1 mol of a substance, which is 6.02 x 10^23.
    Q&A: Understanding the Mass of 1 Mol of O2O_2 Gas =====================================================

Introduction

In our previous article, we discussed the mass of 1 mol of O2O_2 gas and concluded that the correct answer is option C, which states that 1 mol of oxygen gas has a mass of 15.99 g. In this article, we will provide a Q&A section to help you better understand the concept and address any questions you may have.

Q: What is a mole?

A: A mole is a unit of measurement that represents 6.02 x 10^23 particles of a substance. This number is known as Avogadro's number and is a fundamental constant in chemistry.

Q: What is the molar mass of oxygen gas?

A: The molar mass of oxygen gas is 15.99 g/mol. This means that 1 mol of oxygen gas has a mass of 15.99 g.

Q: How do I calculate the mass of 1 mol of a substance?

A: To calculate the mass of 1 mol of a substance, you need to know its molar mass and multiply it by 1. For example, if the molar mass of a substance is 20 g/mol, then 1 mol of that substance has a mass of 20 g.

Q: What is Avogadro's number?

A: Avogadro's number is the number of particles in 1 mol of a substance, which is 6.02 x 10^23. This number is a fundamental constant in chemistry and is used to express the amount of a substance in terms of its mass.

Q: Why is it important to know the mass of 1 mol of a substance?

A: Knowing the mass of 1 mol of a substance is important because it allows you to calculate the amount of a substance in terms of its mass. This is crucial in chemistry, as it helps you to understand the properties and behavior of substances.

Q: Can I use Avogadro's number to calculate the mass of a substance?

A: No, you cannot use Avogadro's number to calculate the mass of a substance. Avogadro's number represents the number of particles in 1 mol of a substance, not the mass of the substance. To calculate the mass of a substance, you need to know its molar mass and multiply it by 1.

Q: What is the difference between molar mass and molecular mass?

A: Molar mass is the mass of 1 mol of a substance, while molecular mass is the mass of a single molecule of a substance. For example, the molar mass of water (H2O) is 18 g/mol, while the molecular mass of a single water molecule is 18 g.

Q: Can I use the molecular mass of a substance to calculate its molar mass?

A: No, you cannot use the molecular mass of a substance to calculate its molar mass. The molecular mass of a substance is the mass of a single molecule, while the molar mass of a substance is the mass of 1 mol of the substance.

Q: What is the significance of the mole in chemistry?

A: The mole is a fundamental concept in chemistry, as it allows us to express the amount of a substance in terms of its mass. This is crucial in chemistry, as it helps us to understand the properties and behavior of substances.

Q: Can I use the mole to calculate the number of particles in a substance?

A: Yes, you can use the mole to calculate the number of particles in a substance. Since 1 mol of a substance contains 6.02 x 10^23 particles, you can multiply the number of moles of a substance by Avogadro's number to get the total number of particles.

Conclusion

In conclusion, the mole is a fundamental concept in chemistry that allows us to express the amount of a substance in terms of its mass. Understanding the mass of 1 mol of a substance is crucial in chemistry, as it helps us to understand the properties and behavior of substances. We hope that this Q&A article has helped you to better understand the concept and address any questions you may have.

Key Takeaways

  • A mole is a unit of measurement that represents 6.02 x 10^23 particles of a substance.
  • The molar mass of oxygen gas is 15.99 g/mol.
  • 1 mol of a substance has a mass equal to its molar mass.
  • Avogadro's number represents the number of particles in 1 mol of a substance.
  • The mole is a fundamental concept in chemistry that allows us to express the amount of a substance in terms of its mass.

References

Glossary

  • Mole: A unit of measurement that represents 6.02 x 10^23 particles of a substance.
  • Molar mass: The mass of 1 mol of a substance.
  • Avogadro's number: The number of particles in 1 mol of a substance, which is 6.02 x 10^23.
  • Molecular mass: The mass of a single molecule of a substance.