Question

Calculate the actual mass of one atom of carbon if 12g of cardron contains one mole of carbon.​

Answer 1

2.0 × 10⁻²³ g C

General Formulas and Concepts:

Chemistry - Atomic Structure

• Using Dimensional Analysis
• Avogadro Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

Step-by-step explanation:

Step 1: Define

1 atom C

Step 2: Identify Conversions

Avogadro Number

Molar Mass of C - 12.01 g/mol

Step 3: Convert

`1 \ atom \ C((1 \ mol \ C)/(6.022 \cdot 10^(23) \ atoms \ C) )((12.01 \ g \ C)/(1 \ mol \ C) )` = 1.99435 × 10⁻²³ g C

Step 4: Check

We are given 2 sig figs. Follow sig fig rules and round.

1.99435 × 10⁻²³ g C ≈ 2.0 × 10⁻²³ g C