What Is The Mass Of 1.5 Moles Of Co2

What is the Mass of 1.5 Moles of CO₂? A Step-by-Step Guide

Determining the mass of a given number of moles of a substance is a fundamental concept in chemistry. This article will guide you through the process of calculating the mass of 1.5 moles of carbon dioxide (CO₂), providing a clear understanding of the steps involved and the relevant concepts. This calculation is crucial for various applications, including stoichiometry problems and understanding chemical reactions.

Understanding Moles and Molar Mass

Before we delve into the calculation, let's clarify some essential terms. A mole (mol) is a fundamental unit in chemistry representing Avogadro's number (approximately 6.022 x 10²³) of particles, whether they are atoms, molecules, or ions. The molar mass is the mass of one mole of a substance, expressed in grams per mole (g/mol).

Calculating the Molar Mass of CO₂

To find the mass of 1.5 moles of CO₂, we first need to determine the molar mass of CO₂. This is done by adding the atomic masses of all the atoms in the molecule.

• Carbon (C): Approximately 12.01 g/mol
• Oxygen (O): Approximately 16.00 g/mol

Since CO₂ has one carbon atom and two oxygen atoms, its molar mass is:

12.01 g/mol (C) + 2 * 16.00 g/mol (O) = 44.01 g/mol

Therefore, the molar mass of CO₂ is approximately 44.01 g/mol.

Calculating the Mass of 1.5 Moles of CO₂

Now that we know the molar mass of CO₂, we can calculate the mass of 1.5 moles using the following formula:

Mass (g) = Number of moles (mol) x Molar mass (g/mol)

Plugging in the values:

Mass (g) = 1.5 mol x 44.01 g/mol = 66.015 g

Therefore, the mass of 1.5 moles of CO₂ is approximately 66.02 grams.

Practical Applications and Further Considerations

This calculation is essential for various chemical applications, such as:

• Stoichiometry: Determining reactant and product quantities in chemical reactions.
• Gas Laws: Relating the mass, volume, and pressure of gases.
• Solution Chemistry: Calculating the concentration of solutions.

While we've used approximate atomic masses here, for more precise calculations, you should consult a periodic table with more decimal places for atomic weights. Understanding these calculations is crucial for mastering fundamental chemistry concepts and solving more complex problems. Remember to always pay close attention to units and significant figures to ensure accuracy in your results.