How many hydrogen atoms are in one mole of caffeine

This drawing shows a human body system. what is the primary function of this body system?

For each of the following compounds, write the formula then predict whether it would be a strong, weak, or non-electrolyte when placed in di water. for the ionic compounds only, put (s) or (aq) after the forrmula formula strong, weak or non electrolyte? a calcium hydroxide b. silver carbonate c. lead(ii) sulfate d. phosphorus trifluoride e. sodium phosphide f barium sulfate g. strontium acetate h. zinc nitrate

An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree of polarity ?