What is the main difference between a soap and a detergent?
A) Soaps are made from fatty acids, detergents are synthetic.
B) Soaps are biodegradable, detergents are not.
C) Detergents are better than soaps.
D) Soaps are all natural.
E) Soaps and detergents are exactly the same.
Question 2
Deuterium oxide, ImageO, and water, ImageO, have the same chemical structure and differ only in that ImageO possesses the deuterium isotope of hydrogen, whereas water possesses the protium isotope.
Deuterium oxide, also known as heavy water, is 11 percent heavier than water. Might you expect its boiling temperature also to be about 11 percent greater? Why or why not?
A) The mass of the molecules has a far greater influence on the boiling temperature of the substance than does the polarity of the molecules, so ImageO boils at a higher temperature.
B) Since they have the same chemical structures, there is a similar molecular attraction between the molecules, so their boiling temperatures are similar.
C) Since deuterium is radioactive, it breaks down more easily, so it has a lower boiling temperature than water.
D) Since boiling temperature is a measure of the speed of a molecule, the heavier molecules move slower and thus have a higher boiling temperature.
Diagram of the Twenty Essential Amino Acids
Nucleic acids.
A typical open-end wrench. Note the size difference on each end and that the head is angled 15 ...
Transport of acetyl units and reducing equivalents used in fatty acid synthesis
Differences in the mitochondrial code and coding for the “21st and 22nd” amino acids
Difference Between a Sidereal Month and a Synodic Month