http://www.anatomyzone.com. 3D anatomy tutorial providing a basic introduction to respiratory anatomy using the Zygote Body Browser (http://www.zygotebody.com). This is the second part of the tutorial and covers the bronchial tree and lungs.Join the Facebook page for updates: http://www.facebook.com/anatomyzone.his is the second part of the tutorial and covers the bronchial tree and lungs. Join the Facebook page for updates: http://www.facebook.com/anatomyzone.
The average atomic mass of carbon is 12.011. This is a weighted average based on three forms (isotopes) of carbon with different natural abundances. Carbon 12 has an atomic mass of 12.00 (carbon 12 is a special case because its mass is <i>defined</i> to be exactly 12 atomic mass units) and a natural abundance of 0.9893.
To find the mass of a compound such as carbon dioxide or water you simple add up the mass numbers of each individual element within that compound. So for CO2 you add 12(for carbon,C) and 16(for oxygen,O) and again another 16 (for the 2nd oxygen) you get 44 for the total mass of carbon dioxide. If you now do the same for water adding 1, 1 and 16 you get a total mass number of 18. 44 is higher than 18 therefore carbon dioxide is the heavier compound.