Compare the molecular formula of a carbohydrate (CH2O)n with that of carbon dioxide (CO2). What does the presence of hydrogen atoms in carbohydrates indicate

Hydrogen atoms indicate a hydrate of hydrogen

Explanation: (CH2O)n is the impirical formula of carbonhydrate, which can be stated as: Cn + H2n + On, that is, 12n + 2n +16n = 30n (where n is number of moles)

CO2 is the molecular formular for carbon (IV) oxde and molar mass is given as: C + O2 = 12 + (16 X 2) = 12 + 32 = 44g

the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.