Why is specimen preparation important in metallurgy? Why can carbon form very large molecules? Why is graphite used as a lubricant but not diamond? Why is graphene flexible? Why are electrodes often made from graphite? Why is carbon black more elect...
In terms of structure, explain why salt has a higher melting point than sugar. Explain why graphite has a lower melting point than diamond even though both are carbon compounds. Explain why the melting point of your prepared alum must either be equal to or be less than the actual melting...
"graphene is stronger and stiffer than diamond, yet can be stretched by a quarter of its length, like rubber. its surface area is the largest known for its weight." geim and his colleague (and former postdoctoral assistant) konstantin novoselov first produced graphene in 2004 by repeatedly ...
Carbon monoxide binds very strongly to the iron atoms in hemoglobin, the principal oxygen-carrying compound in blood. The affinity between CO and hemoglobin is200 times strongerthan the affinity between hemoglobin and oxygen. When CO binds to the hemoglobin it cannot be released nearly as readily ...
Why is the melting point for diamond (T = 3500 degrees C ) is so much higher than that for PET (T = 260 degrees C) Metals are characterized by which one of the following bonding types? (a) adhesive (b) covalent (c)...
Carbon monoxide also binds coordinately to heme iron atoms in a manner similar to that of oxygen, butthe binding of carbon monoxide to heme is much stronger than that of oxygen. The preferential binding of carbon monoxide to heme iron is the main reason for carbon monoxide poisoning. ...
There are additional fixed costs to process and purify the donor material into high-purity graphite. Also, the introduction of novel material into the growth cells increases the growth cycle failure rate, so more growth cycles are needed to ensure that a proper rough diamond is grown to satisfy...
In recent years, perovskites have taken the solar cell industry by storm. They are cheap, easy to produce and very flexible in their applications. Their efficiency at converting light into electricity has grown faster than that of any other material - fr
Why is a drop of falling water spherical? Give a scientific reason. When a marble is dropped into a beaker of water, it sinks to the bottom. Which of the following is the best explanation? What are the differences between diamond and graphite?
Discuss why supercritical carbon dioxide is a nearly ideal solvent. Why would mixed solvents be used for recrystallization? Why do elements form compounds? Why would a heat treated enzyme behave differently than a non-heated enzyme? Why does diamond have a lower entropy than graphite? Why don't...