How many hydrogen atoms is the carbonyl group bonded to? How many bonds does nitrogen form? How many valence electrons does silicon have? How many valence electrons does the lewis structure for a chlorine atom show? What forms a polar covalent bond?
Why is it important for organisms to maintain a pH within a very narrow range and what type of a compound (molecule) is used to help maintain that narrow range? For something that is not an ion what does the number of protons tell you? How many bonds wi ...
Many power plants use the "falling weight" approach in the form of water. The water is pumped uphill to a lake at night when the power plant has excess capacity. During high-demand daytime periods, the water runs through a turbine on its way downhill to a lower lake. (See How Hydropow...
How Metals Work Together to Weaken Hardy Nitrogen-Nitrogen Bonds Nitrogen, an element that is essential for all living cells, makes up about 78 percent of Earth’s atmosphere. However, most organisms cannot make use of this nitrogen until it is converted into ammonia. Until humans inve...
When energy is added topure silicon, in the form of heat for example, it can cause a few electrons to break free of their bonds and leave their atoms. A hole is left behind in each case. These electrons, called free carriers, then wander randomly around the crystalline lattice looking fo...
At many points surrounding the landfill are groundwater monitoring stations. These are pipes that are sunk into the groundwater so water can be sampled and tested for the presence of leachate chemicals. The temperature of the groundwater is also measured. ...
When energy is added topure silicon, in the form of heat for example, it can cause a few electrons to break free of their bonds and leave their atoms. A hole is left behind in each case. These electrons, called free carriers, then wander randomly around the crystalline lattice looking fo...
It turned out that in such interaction, the side groups of Aa are directed toward the nitrogen base of the middle (2nd) nucleotide and can interact with the latter (hydrogen bonds, hydrophobic interaction, Van-der-Waals contacts, dehydration of acceptors and donors of the hydrogen bonds). The...
R177 in the Arp3 W-loop hydrogen-bonds with the backbone of M47 in the D-loop of daughter filament subunit D1 (Fig. 3b), which is supported by a neighboring intra-subunit hydrogen-bond interaction between the backbone nitrogen of G48 and the sidechain oxygen of Q49 (Fig. 3b). These...
How many covalent bonds does nitrogen form if each of its unpaired electrons participates in one bond? In covalent bonds, how many pairs of electrons are shared in a single bond? In covalent bonds, how many pairs of electrons are shared in a triple bond? In ...