Molecular Weight of Potassium Phosphate

Oct 13, 2025 by magicalceylontours.com 49 views

What is the Mass, in Grams, of $$5.24 \times 10^{22}$$ Molecules of Potassium Phosphate?

In chemistry, understanding the mass of molecules is crucial for various calculations and applications. Potassium phosphate (K3PO4) is a compound composed of potassium (K), phosphorus (P), and oxygen (O) atoms. In this article, we will calculate the mass of $$5.24 \times 10^{22}$$ molecules of potassium phosphate.

Molecular Weight of Potassium Phosphate

To calculate the mass of potassium phosphate molecules, we need to determine the molecular weight of the compound. The molecular formula for potassium phosphate is K3PO4. The atomic weights of the elements are:

Potassium (K): 39.0983 g/mol
Phosphorus (P): 30.9738 g/mol
Oxygen (O): 15.9994 g/mol

The molecular weight of potassium phosphate can be calculated by summing the atomic weights of its constituent atoms:

Molecular weight of K3PO4 = (3 * 39.0983) + 30.9738 + (4 * 15.9994) = 117.295 + 30.9738 + 63.9976 = 212.267 g/mol

Calculating the Mass of Potassium Phosphate Molecules

Now that we have the molecular weight of potassium phosphate, we can calculate the mass of $$5.24 \times 10^{22}$$ molecules. To do this, we will use the formula:

Mass = Number of molecules * Molecular weight

Substituting the given values, we get:

Mass = $$5.24 \times 10^{22}$$ molecules * 212.267 g/mol

To calculate the mass, we need to multiply the number of molecules by the molecular weight. Since the number of molecules is given in scientific notation, we will multiply the coefficients and add the exponents:

5.24 \times 10^{22}$$ \* 212.267 = $$1.114 \times 10^{25}

Now, we can calculate the mass by multiplying the coefficient by the molecular weight:

Mass = $$1.114 \times 10^{25}$$ * 212.267 g/mol = $$2.358 \times 10^{27}$$ g

In conclusion, the mass of $$5.24 \times 10^{22}$$ molecules of potassium phosphate is approximately $$2.358 \times 10^{27}$$ grams. This calculation demonstrates the importance of understanding molecular weights and the mass of molecules in chemistry. By applying the principles of molecular weight and the Avogadro's number, we can calculate the mass of molecules with high accuracy.

National Institute of Standards and Technology (NIST). (2022). Atomic Weights of the Elements 2022.
IUPAC. (2022). Atomic Weights of the Elements 2022.

What is the molecular weight of potassium phosphate? The molecular weight of potassium phosphate is 212.267 g/mol.
How do I calculate the mass of molecules? To calculate the mass of molecules, you need to multiply the number of molecules by the molecular weight.
What is the mass of $$5.24 \times 10^{22}$$ molecules of potassium phosphate? The mass of $$5.24 \times 10^{22}$$ molecules of potassium phosphate is approximately $$2.358 \times 10^{27}$$ grams.
Frequently Asked Questions: Potassium Phosphate and Molecular Weight ====================================================================

Q: What is the molecular weight of potassium phosphate?

A: The molecular weight of potassium phosphate (K3PO4) is 212.267 g/mol. This value is calculated by summing the atomic weights of its constituent atoms: potassium (K), phosphorus (P), and oxygen (O).

Q: How do I calculate the molecular weight of a compound?

A: To calculate the molecular weight of a compound, you need to sum the atomic weights of its constituent atoms. The atomic weights of the elements can be found in the periodic table or in reference materials such as the National Institute of Standards and Technology (NIST) Atomic Weights of the Elements.

Q: What is the difference between atomic weight and molecular weight?

A: Atomic weight refers to the average weight of an atom of a particular element, while molecular weight refers to the total weight of a molecule, which is the sum of the atomic weights of its constituent atoms.

Q: How do I calculate the mass of molecules?

A: To calculate the mass of molecules, you need to multiply the number of molecules by the molecular weight. The number of molecules can be expressed in scientific notation, and the molecular weight is typically given in units of grams per mole (g/mol).

Q: What is the mass of $$5.24 \times 10^{22}$$ molecules of potassium phosphate?

A: The mass of $$5.24 \times 10^{22}$$ molecules of potassium phosphate is approximately $$2.358 \times 10^{27}$$ grams. This value is calculated by multiplying the number of molecules by the molecular weight of potassium phosphate.

Q: How do I convert between scientific notation and standard notation?

A: To convert between scientific notation and standard notation, you need to multiply the coefficient by 10 raised to the power of the exponent. For example, $$5.24 \times 10^{22}$$ can be converted to standard notation by multiplying 5.24 by 10^22.

Q: What is the significance of Avogadro's number in calculating the mass of molecules?

A: Avogadro's number (6.022 x 10^23) is a fundamental constant in chemistry that relates the number of molecules to the number of moles. By using Avogadro's number, you can calculate the mass of molecules with high accuracy.

Q: How do I apply the principles of molecular weight and Avogadro's number in real-world applications?

A: The principles of molecular weight and Avogadro's number are essential in various fields such as chemistry, biology, and materials science. By understanding these concepts, you can calculate the mass of molecules, predict the behavior of chemical reactions, and design new materials with specific properties.

Q: What are some common applications of molecular weight and Avogadro's number?

A: Some common applications of molecular weight and Avogadro's number include:

Calculating the mass of molecules in chemical reactions
Predicting the behavior of chemical reactions
Designing new materials with specific properties
Understanding the properties of biological molecules
Developing new pharmaceuticals and medical treatments

In conclusion, the molecular weight of potassium phosphate is 212.267 g/mol, and the mass of $$5.24 \times 10^{22}$$ molecules of potassium phosphate is approximately $$2.358 \times 10^{27}$$ grams. By understanding the principles of molecular weight and Avogadro's number, you can calculate the mass of molecules with high accuracy and apply these concepts in various real-world applications.