Alex saw a rusty old car in an abandoned lot. because he had recently read about chemical reactions, he began to wonder how the rust formed. what happened to cause the rust on the steel car? a. a decomposition chemical reaction took place when the iron in the steel mixed with oxygen to form rust. b. oxygen in the air reacted with the paint on the car and formed rust c. a physical change took place in the steel of the car to form rust d. oxygen in the air chemically combined with iron in the steel to form rust.

How many grams of n2h4 will be consumed by 23 g of n2o4

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

Which fossil fuel is mainly used for heating and cooking? a. electricity b. coal c. petroleum d. natural gas