DIVISION/MULTIPLICATION WORD PROBLEM?? Find concentration of CO2 given particles per million and number of particles in air?
The concentration of CO2 in the air is 410 ppm. A breath of air contains approximately 1.2 × 1022 particles of air. How many of these particles are CO2?
How would go about solving this?
I have the following:
x ppm = (x molecules / 1 x 10^6 particles of air)
Can I just set it up like this?:
( 410 CO2 / 1 x 10^6 particles of air) * (x CO2 / 1.2 x 10^22 particles of air) ??
It's been a long time since I've had to do math, so some reinforcement/corrections would be really nice!
- hcbiochemLv 71 month agoFavourite answer
Yes, you can do this as a proportion where:
410/1X10^6 = x / 1.2X10^22
Cross multiplying gives:
4.92X10^24 = 1X10^6 x
x = 4.92X10^18 CO2 molecules