Question

the air exhaled from the lungs of a smoker has a concentration of 400 ppm co. express the concentration as a percent.

Answer 1

To express the concentration of CO in exhaled air as a percent, divide the concentration in parts per million (ppm) by 1,000,000 to convert to a decimal and then multiply by 100. The concentration of CO in the exhaled air of a smoker is 0.04%.

Step-by-step explanation:

To express the concentration of CO as a percent, we need to convert the concentration in parts per million (ppm) to a decimal and then multiply by 100. Given that the concentration is 400 ppm, we can calculate the percent concentration as follows:

1. Convert 400 ppm to a decimal by dividing by 1,000,000: 400/1,000,000 = 0.0004
2. Multiply the decimal by 100 to express as a percent: 0.0004 x 100 = 0.04%

Therefore, the concentration of CO in the exhaled air of a smoker is 0.04%.