I'm new to Chemistry and in my textbook, it describes the Law of Definite Proportions and then goes on to describe the Law of Multiple Proportions.

The example they give is carbon monoxide and carbon dioxide, where the mass ratio of oxygen to carbon in carbon dioxide is 2.67:1 and the mass ratio of oxygen to carbon in carbon monoxide is 1.33:1.

I understand the above example, and I understand that when you compare them in the following way:

2.67g (proportion of oxygen to 1g carbon in carbon dioxide)/ 1.33g (proportion of oxygen to 1g carbon in carbon monoxide) = 2.00, a small whole number.

$\frac{Mass~oxygen~to~1g~carbon~in~carbon~dioxide}{Mass~oxygen~to~1g~carbon~in~carbon~monoxide}$ = $\frac{2.67g}{1.33g}$ = 2.00

My textbook doesn't describe what a small whole number is, or what it means... just that, in this example, 2.00 is a small whole number.

What is the significance of the 2.00?

I understand that carbon dioxide has double the oxygen. Is this where the 2.00 plays a role?


Question: What do I do wrong to get hip aches after biking?
Answer: I might be inclined to try out a different saddle, look for a smoother route, or invest in wider tires (if your bike will accommodate them). If heltonbiker is correct (above), your bursae may be absorbing more shocks than they can handle, causing the pain you're feeling. If you're a woman riding on a man's saddle, consider looking for a women's saddle, as women's sit-bones are usually further apart than men's. 

If you're able to consult the medical establishment, it may be worth trying for a referral to a physical therapist. Lacking that, a good massage therapist can be a wonder-worker.

Good luck! I hope you can get back to biking pain-free.