What Is The Mass Of 4.35 × 10 − 2 Mol 4.35 \times 10^{-2} \, \text{mol} 4.35 × 1 0 − 2 Mol Of Zinc Chloride \left( \text{ZnCl}_2 \right ]?

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Introduction

In chemistry, understanding the relationship between the number of moles of a substance and its mass is crucial for various calculations and applications. Zinc chloride, $\left( \text{ZnCl}_2 \right)$, is a chemical compound that has several uses, including as a disinfectant and in the production of other chemicals. In this article, we will explore the concept of molar mass and how it can be used to calculate the mass of a given number of moles of zinc chloride.

Molar Mass of Zinc Chloride

The molar mass of a substance is the mass of one mole of that substance. It is calculated by summing the atomic masses of all the atoms in the compound. The atomic masses of zinc (Zn) and chlorine (Cl) are 65.38 g/mol and 35.45 g/mol, respectively. Therefore, the molar mass of zinc chloride can be calculated as follows:

$$\text{Molar mass of ZnCl}_2 = 65.38 \, \text{g/mol} + 2 \times 35.45 \, \text{g/mol}$$

$$\text{Molar mass of ZnCl}_2 = 65.38 \, \text{g/mol} + 70.90 \, \text{g/mol}$$

$$\text{Molar mass of ZnCl}_2 = 136.28 \, \text{g/mol}$$

Calculating the Mass of Zinc Chloride

Now that we have the molar mass of zinc chloride, we can use it to calculate the mass of a given number of moles. The formula for this calculation is:

$$\text{Mass of substance} = \text{Number of moles} \times \text{Molar mass}$$

In this case, we are given the number of moles of zinc chloride as $4.35 \times 10^{-2} \, \text{mol}$. We can now use the molar mass of zinc chloride to calculate the mass of this amount of substance.

$$\text{Mass of ZnCl}_2 = 4.35 \times 10^{-2} \, \text{mol} \times 136.28 \, \text{g/mol}$$

$$\text{Mass of ZnCl}_2 = 5.91 \, \text{g}$$

Conclusion

In conclusion, the mass of $4.35 \times 10^{-2} \, \text{mol}$ of zinc chloride $\left( \text{ZnCl}_2 \right)$ is 5.91 g. This calculation demonstrates the importance of understanding the relationship between the number of moles of a substance and its mass. By knowing the molar mass of a substance, we can easily calculate the mass of a given number of moles, which is a crucial concept in chemistry.

Applications of Molar Mass

Molar mass is a fundamental concept in chemistry that has numerous applications. Some of the key applications of molar mass include:

• Calculating the mass of a substance from its number of moles
• Determining the number of moles of a substance from its mass
• Understanding the relationship between the number of moles of a substance and its volume
• Calculating the concentration of a solution
• Understanding the properties of a substance, such as its density and boiling point

Importance of Molar Mass in Real-World Applications

Molar mass is a critical concept in various real-world applications, including:

• Chemical manufacturing: Molar mass is used to calculate the amount of raw materials needed for production.
• Pharmaceutical industry: Molar mass is used to calculate the amount of active ingredients in a medication.
• Environmental science: Molar mass is used to calculate the amount of pollutants in a given volume of air or water.
• Food industry: Molar mass is used to calculate the amount of nutrients in a given amount of food.

Limitations of Molar Mass

While molar mass is a powerful tool in chemistry, it has some limitations. Some of the key limitations of molar mass include:

• It assumes that the substance is an ideal gas, which is not always the case.
• It does not take into account the intermolecular forces between molecules.
• It does not account for the molecular structure of the substance.

Conclusion

In conclusion, the mass of $4.35 \times 10^{-2} \, \text{mol}$ of zinc chloride $\left( \text{ZnCl}_2 \right)$ is 5.91 g. This calculation demonstrates the importance of understanding the relationship between the number of moles of a substance and its mass. By knowing the molar mass of a substance, we can easily calculate the mass of a given number of moles, which is a crucial concept in chemistry.

Introduction

In our previous article, we explored the concept of molar mass and how it can be used to calculate the mass of a given number of moles of zinc chloride. In this article, we will answer some frequently asked questions about molar mass and zinc chloride.

Q: What is the molar mass of zinc chloride?

A: The molar mass of zinc chloride is 136.28 g/mol.

Q: How do I calculate the mass of a given number of moles of zinc chloride?

A: To calculate the mass of a given number of moles of zinc chloride, you can use the formula: Mass of substance = Number of moles x Molar mass. For example, if you have 4.35 x 10^-2 mol of zinc chloride, the mass would be: Mass of ZnCl2 = 4.35 x 10^-2 mol x 136.28 g/mol = 5.91 g.

Q: What is the relationship between the number of moles of a substance and its mass?

A: The number of moles of a substance is directly proportional to its mass. This means that if you have a larger number of moles of a substance, you will have a larger mass.

Q: How do I determine the number of moles of a substance from its mass?

A: To determine the number of moles of a substance from its mass, you can use the formula: Number of moles = Mass of substance / Molar mass. For example, if you have 5.91 g of zinc chloride, the number of moles would be: Number of moles = 5.91 g / 136.28 g/mol = 4.35 x 10^-2 mol.

Q: What are some real-world applications of molar mass?

A: Molar mass has numerous real-world applications, including:

• Chemical manufacturing: Molar mass is used to calculate the amount of raw materials needed for production.
• Pharmaceutical industry: Molar mass is used to calculate the amount of active ingredients in a medication.
• Environmental science: Molar mass is used to calculate the amount of pollutants in a given volume of air or water.
• Food industry: Molar mass is used to calculate the amount of nutrients in a given amount of food.

Q: What are some limitations of molar mass?

A: While molar mass is a powerful tool in chemistry, it has some limitations. Some of the key limitations of molar mass include:

• It assumes that the substance is an ideal gas, which is not always the case.
• It does not take into account the intermolecular forces between molecules.
• It does not account for the molecular structure of the substance.

Q: How do I calculate the concentration of a solution?

A: To calculate the concentration of a solution, you can use the formula: Concentration = Number of moles of solute / Volume of solution. For example, if you have 4.35 x 10^-2 mol of zinc chloride in 1 L of solution, the concentration would be: Concentration = 4.35 x 10^-2 mol / 1 L = 0.0435 M.

Q: What is the relationship between the number of moles of a substance and its volume?

A: The number of moles of a substance is directly proportional to its volume. This means that if you have a larger volume of a substance, you will have a larger number of moles.

Q: How do I calculate the density of a substance?

A: To calculate the density of a substance, you can use the formula: Density = Mass of substance / Volume of substance. For example, if you have 5.91 g of zinc chloride in 1 L of solution, the density would be: Density = 5.91 g / 1 L = 5.91 g/L.

Q: What is the boiling point of zinc chloride?

A: The boiling point of zinc chloride is 283°C.

Q: What is the melting point of zinc chloride?

A: The melting point of zinc chloride is 283°C.

Conclusion

In conclusion, molar mass is a fundamental concept in chemistry that has numerous applications. By understanding the relationship between the number of moles of a substance and its mass, you can easily calculate the mass of a given number of moles, which is a crucial concept in chemistry. We hope that this Q&A article has been helpful in answering some of your questions about molar mass and zinc chloride.