Find the mass (in \(\mathrm{kg}\) ) of one molecule of \(\mathrm{CO}_{2}\)

Short Answer

Expert verified
Answer: The mass of one CO2 molecule is approximately \(7.310 \times 10^{-26} kg\).

Step by step solution

01

Find the molar mass of CO2

To find the molar mass of CO2, we need to know the molar mass of each element and their respective number of atoms in a CO2 molecule. A CO2 molecule is composed of one carbon (C) atom and two oxygen (O) atoms. The molar mass of carbon is 12.01 g/mol, and the molar mass of oxygen is 16.00 g/mol. To find the molar mass of CO2, multiply the molar mass of each element by the number of its atoms in the molecule and then add the results: Molar mass of CO2 = (1 × 12.01 g/mol) + (2 × 16.00 g/mol) = 12.01 g/mol + 32.00 g/mol = 44.01 g/mol.
02

Convert g/mol to kg/mol

Since we need to find the mass in kg, we first need to convert the molar mass from grams to kilograms. We know that 1 kg = 1000 g, so divide the molar mass by 1000: Molar mass of CO2 = 44.01 g/mol ÷ 1000 = 0.04401 kg/mol.
03

Use Avogadro's number to find the mass of one molecule

Now, we'll use Avogadro's number (6.022 × 10^{23} ) to find the mass of a single CO2 molecule. Since there are 6.022 × 10^{23} molecules in a mole, we can divide the molar mass by Avogadro's number to find the mass of one molecule: Mass of one CO2 molecule = \(\frac{0.04401 kg/mol}{6.022 \times 10^{23} molecules/mol}\).
04

Calculate the mass of one molecule

Now, you can perform the operation to find the mass of a single CO2 molecule: Mass of one CO2 molecule = \(\frac{0.04401 kg/mol}{6.022 \times 10^{23} molecules/mol} \approx 7.310 \times 10^{-26} kg\). So, the mass of one CO2 molecule is approximately \(7.310 \times 10^{-26} kg\).

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