Patrick's class is studying mixtures. The students hypothesized that if they mix two substances together a change will occur. They divide into two groups. Each group had three plastic cups, three pieces of steel wool, water, and vegetable oil.
Each group followed these steps.
the
1
Put 2 ounces of water into one plastic cup.
the
2.
Poured 2 ounces of vegetable oil in the second plastic cup.
1
3
Added one piece of steel wool to each cup.
2.
4.
Placed the third piece of steel wool into a dry plastic cup.
5.
Covered each plastic cup loosely with plastic wrap.
3
6.
Checked the cups every day for changes.
4
After two weeks, a red substance has formed on the steel wool in the water.
5
Write your responses in the spaces below.
Explain which cup shows evidence of a new substance.

Explain why scientists use shared characteristics to make cladograms.

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

An excess of lithium oxide undergoes a synthesis reaction with water to produce lithium hydroxide li2o+h2o→2lioh if 1.05 g of water reacted, what is the theoretical yield of lithium hydroxide? a) 5.83 x 10–2 g lioh b) 1.17 x 10–1 g lioh c) 2.79 x 100 g lioh d) 1.40 x 100 g lioh