Identify a substance that is 140 g and has a volume of 20mL by first calculating the density (SHOW YOUR WORK!!), and THEN matching your answer with the substance in the table below.
Show your work here:
Substance
Density
(g/mL)
Olive oil 0.89
Water 1.0
Aluminum 2.7
Zinc
7.0
Iron
7.8

Students in biology are studying the macromolecules of life. they used a calorimeter to determine the calories in various types of food. once the lab was completed, the students ate the left over food samples. monica commented that in just 6 or 7 "chews" of the saltine, it was gone; nothing but a sticky paste in her mouth. elaborate on what happened chemically while chewing the saltine. include the macromolecules present.

2. sketch the inside of the bean nodule, and describe or label what you observed with the hand lens.

This is the process of making a prediction based on the results of prior observations of similar events.