Answer:
A: The bonds of a Molecule
Explanation:
Answer:
![Fe(OH)_3(s)\rightarrow Fe^{3+}(aq)+3OH^-(aq)](https://tex.z-dn.net/?f=Fe%28OH%29_3%28s%29%5Crightarrow%20Fe%5E%7B3%2B%7D%28aq%29%2B3OH%5E-%28aq%29)
Explanation:
Hello.
In this case, for the reaction between aqueous solutions of ammonium chloride and iron (III) hydroxide, we have the following complete molecular reaction:
![3NH_4Cl(aq)+Fe(OH)_3(s)\rightarrow 3NH_4OH+FeCl_3](https://tex.z-dn.net/?f=3NH_4Cl%28aq%29%2BFe%28OH%29_3%28s%29%5Crightarrow%203NH_4OH%2BFeCl_3)
And the full ionic equation, taking into account that the iron (III) hydroxide cannot be dissolved as it is insoluble in water:
![3NH_4^+(aq)+3Cl^-(aq)+Fe(OH)_3(s)\rightarrow 3NH_4^+(aq)+3OH^-(aq)+Fe^{3+}(aq)+3Cl^-(aq)](https://tex.z-dn.net/?f=3NH_4%5E%2B%28aq%29%2B3Cl%5E-%28aq%29%2BFe%28OH%29_3%28s%29%5Crightarrow%203NH_4%5E%2B%28aq%29%2B3OH%5E-%28aq%29%2BFe%5E%7B3%2B%7D%28aq%29%2B3Cl%5E-%28aq%29)
Finally, the net ionic equation, considering that spectator ions are NH₄⁺, Cl⁻ as they are both the left and right side, therefore, the net ionic equation is:
![Fe(OH)_3(s)\rightarrow Fe^{3+}(aq)+3OH^-(aq)](https://tex.z-dn.net/?f=Fe%28OH%29_3%28s%29%5Crightarrow%20Fe%5E%7B3%2B%7D%28aq%29%2B3OH%5E-%28aq%29)
Best regards.
Answer:
Solid turns to liquid.
Explanation:
When you freeze water, it turns into ice. When melted it's still water. No chemical changes were made to the piece of ice melted. The only change was ice (solid) to water (liquid)
Conservation of Matter - Matter can change forms through physical and chemical changes, but no matter what, matter is conserved. The same amount of matter exists before and after the change.
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solution;
Rhizoferrin is a member of a new class of siderophores (microbial iron transport compounds) based on carboxylate and hydroxy donor groups rather than the commonly encountered hydroxamates and catecholates. We have studied the coordination chemistry of rhizoferrin (Rf), as a representative of this group, with Fe(3+), Rh(3+), Cr(3+), Al(3+), Ga(3+), VO(2+), and Cu(2+). The metal complexes have been studied by UV-vis, CD, NMR, and EPR spectroscopies and mass spectrometry. The formation constants for the iron complex have also been measured and yield a log K(LFe) of 25.3. The Rh and Cr rhizoferrin complexes are unusual in that they appear to adopt a chirality about the metal center that is the opposite of the native iron analog. Several of the alternative metal ion complexes are found to have biological activity toward Morganella morganii in a plate type assay.
Answer : The pressure in torr and in atmospheres are, 745 torr and 0.980 atm respectively.
Explanation :
As we are given that the atmospheric pressure is, 745 mmHg.
Now we have to determine the pressure in torr and atm.
Conversions used:
1 atm = 760 mmHg
1 atm = 760 torr
1 mmHg = 1 torr
As, 760 mmHg = 1 atm
So, 745 mmHg = ![\frac{745mmHg}{760mmHg}\times 1atm=0.980atm](https://tex.z-dn.net/?f=%5Cfrac%7B745mmHg%7D%7B760mmHg%7D%5Ctimes%201atm%3D0.980atm)
and,
As, 1 mmHg = 1 torr
So, 745 mmHg = 745 torr
Therefore, the pressure in torr and in atmospheres are, 745 torr and 0.980 atm respectively.