What is the mass percentage composition of O in L-carnitine (C7H15NO3), a compound that is taken as a dietary supplement to re- duce muscle fatigue? Answer in units of %. Your answer must be within ± 3.0%

3.5% not sure but thank it is

chemical properties are the characteristic of matter which can only be observed by changing the chemical identity of a sample like flammability reactivity and toxicity.

b. accuracy of the data matters alot more than its number of digits, organization or amount of detail. quantitative observation is more accepted than the qualitative observation.