Which statement about pure substances and molecules is correct? O All molecules are pure substances.
O Molecules cannot be pure substances.
O Pure substances cannot be molecules.
O All pure substances are molecules.

What is the relation between concentration of reactants and the rate of chemical reaction?

For a patient with the following pes statement and interventions, which would be the most appropriate monitoring and evaluating data? pes statement: inadequate calcium intake related to food and nutrition related knowledge deficit as evidenced by statements that the only dietary source of calcium is milk and she believes that she is lactose intolerant. patient’s nutrition prescription is for a diet providing 1200 mg calcium per day. patient was provided with in-depth nutrition education on alternative dietary and supplement sources of calcium. a. calcium intake (at subsequent visit) b. knowledge assessment by asking patient to identify food sources from menus and shopping list (at the end of the current visit) c. serum calcium (at next visit) d. both a and b e. both a and c

If you have 5.25 grams of methane (ch4), how many grams of co2 will you produce ?