Answer:
If a solid line represents a covalent bond and a dotted line represents intermolecular attraction, which of the choices shows a hydrogen bond?
-N-------H-O-
-O------H-C-
-C-----H-F-
H-H
Of the options shown those that form hydrogen bonds are the following:
-N-------H-O-
-O------H-C-
Since they occur from the attraction in a hydrogen atom and an oxygen or nitrogen atom with a negative charge.
Explanation:
The hydrogen bridge or hydrogen bond force is the attractive electrostatic force between an electronegative atom and a hydrogen atom covalently bonded to another electronegative atom. It results from the formation of a charge-dipole force with a hydrogen atom attached to a nitrogen, oxygen or fluorine atom.
The hydrogen bond strength is located somewhere between a covalent bond and a Van der Waals force (dispersion force). This type of bonding occurs both in inorganic molecules such as water, and in organic molecules such as DNA.
Answer:
No because the statue is discolored from weathering.
Explanation:
Since the statue was already discolored, that means the substance has been acted upon by a process known as weathering .
Weathering is the breaking down of rocks or dissolving of rocks by the action of rain water, biological activities and temperatures changes. Weathering may be mechanical or chemical . Mechanical weathering live no changes in the overall chemical change of the weathered rock.
Chemical weathering usually occurs when rain water reacts with mineral constituent of rock to form a new minerals like clay and soluble salt. The Chemical changes can be more rapid if the rain water is slightly acidic. The rainwater in the presence of oxygen(oxidation), because of it acidity may have caused the discoloration of the granite rock. Rain water will likely promotes weathering not the other way round
Answer:
A noble gas configuration of an atom consists of the elemental symbol of the last noble gas prior to that atom, followed by the configuration of the remaining electrons. So for sodium we make the substitution of (Ne) for the 1s22s22p6 part of the configuration. Sodium's noble gas configuration becomes (Ne) 3s1.
Answer:
a 10,00 year-old coral reef ecosystem
