Carbon found nature as a mixture of C-12 and C-13. The average atomic mass of carbon is 12.011u. What is the percentage abundance of carbon-12 in nature ?

Explanation

To find the percentage abundance of carbon-12 (C-12) in nature, we can use the average atomic mass of carbon and set up an equation based on the abundances of the isotopes. Here’s how to solve the problem step by step:

### Step 1: Define Variables
Let:
- \( x \) = percentage abundance of C-12
- \( 100 - x \) = percentage abundance of C-13

### Step 2: Write the Equation for Average Atomic Mass
...