An organic acid is composed of carbon (70.57%) hydrogen (5.93%), and oxygen (23.50%). Its molar mass is 136.15 g/mol. Determine the molecular formula of the compound

Iknow #2 is d. i just need to know why

All cells are made of four types of acids, lipids, proteins, and carbohydrates.

3.09 lab: reaction of metals 1 which combinations of substances resulted in a chemical change? for each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. make a general statement about the reactivity of the metals in this experiment.