Answer:
MgSO4.7H2O
Explanation:
The heating removes all the water (H2O) in the crystal.
The mass of the water removed = 82-40.1 = 41.9 grams.
The formula of the hydrated salt = MgSO4. xH2O
The ratio in of the masses of MgSO4 : H2O = 40.1 : 41.9
Dividing these by the molar masses we get
40.1/ 120.4 to 41.9 / 18.016
= 0.33 : 2.33
= 1 : 7.
So there are 7 water molecules n the hydrate.
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.
The answer would be the 3. Mg + energy--> mg+ + e-
Ionization Energy is the amount of energy vital to eliminate the most loosely bond electron from an atom in the gas stage. Since Magnesium has a higher first energy which is 738 kj/mol, is the energy needed to remove the outermost, or highest energy.
The answer is D, species!
Hope this helps!
