I guess d correct answer is CaCO3
Answer:
Graphitic carbon nitride (g-C3N4) is a rising two-dimensional material possessing intrinsic semiconducting property with unique geometric configuration featuring superimposed heterocyclic sp2 carbon and nitrogen network, nonplanar layer chain structure, and alternating buckling. The inherent porous structure of heptazine-based g-C3N4 features electron-rich sp2 nitrogen, which can be exploited as a stable transition metal coordination site. Multiple metal-functionalized g-C3N4 systems have been reported for versatile applications, but local coordination as well as its electronic structure variation upon incoming metal species is not well understood. Here we present detailed bond coordination of divalent iron (Fe2+) through micropore sites of graphitic carbon nitride and provide both experimental and computational evidence supporting the aforementioned proposition.
1) b
2)c
3)<span>None.</span>Wind is large scale air movement to equalize horizontal pressure differences in the atmosphere. The reason for such pressure differences, as far as atmosphere is concerned, is always heat due to the radiation of the sun<span>.//////////t</span>he pressure is more powerful than the wind itself.
4)c
Answer:
smooth and skeleton muscle
Explanation:
they are considered as musculoskeletal system.
The differences are the freezing and boiling points being exactly 180 degrees
