Answer:
1. benzoic acid
2. p-cresol
3. Aniline
Explanation:
<u>1. Dissolving the mixture in a water-immiscible organic solvent - NaHCO₃, H₂O, CH₂Cl₂:</u>
Only benzoic acid will react with the base, sodium bicarbonate and will form ionic salt which is soluble in the water and thus benzoic acid acids gets separated in the aqueous medium.
<u>2. Dissolving the mixture in a water-immiscible organic solvent - NaOH, H₂O, CH₂Cl₂:</u>
p-cresol will react with strong base NaOH and form a salt with sodium ions which is soluble in water and thus p-cresol gets separated in the aqueous medium.
<u>3. Dissolving the mixture in a water-immiscible organic solvent - H₃O⁺Cl⁻, H₂O, CH₂Cl₂:</u>
Aniline will react with H₃O⁺Cl⁻ and form salt, anilinium chloride which is soluble in water and thus aniline gets separated in the aqueous medium.
Toulene will remain in the organic layer.
"16" is the number of valence electrons among the following choices given in the question that the Lewis <span>dot structure for a CO2 molecule uses. The correct option among all the options that are given in the question is the fourth option or the last option. I hope that this is the answer that has come to your help.</span>
Answer:
3.98 g
Explanation:
Step 1. Write the balanced chemical reaction. In this case, magnesium reacts with oxygen to produce magnesium oxide:
![2~Mg(s) + O_2 (g)\rightarrow 2~MgO (s)](https://tex.z-dn.net/?f=2~Mg%28s%29%20%2B%20O_2%20%28g%29%5Crightarrow%202~MgO%20%28s%29)
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Step 2. Calculate the number of moles of magnesium:
![n_{Mg} = \frac{2.4~g}{24.305~g/mol} = 0.0987~mol](https://tex.z-dn.net/?f=n_%7BMg%7D%20%3D%20%5Cfrac%7B2.4~g%7D%7B24.305~g%2Fmol%7D%20%3D%200.0987~mol)
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Step 3. Calculate the number of moles of oxygen:
![n_{O_2} = \frac{10.0~g}{32.00~g/mol} = 0.3125~mol](https://tex.z-dn.net/?f=n_%7BO_2%7D%20%3D%20%5Cfrac%7B10.0~g%7D%7B32.00~g%2Fmol%7D%20%3D%200.3125~mol)
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Step 4. Identify the limiting reactant comparing the equivalents. Equivalent of Mg:
![eq_{Mg} = \frac{0.0987~mol}{1} = 0.0987~mol](https://tex.z-dn.net/?f=eq_%7BMg%7D%20%3D%20%5Cfrac%7B0.0987~mol%7D%7B1%7D%20%3D%200.0987~mol)
Equivalent of oxygen:
![eq_{O_2} = \frac{0.3125~mol}{2} = 0.15625~mol](https://tex.z-dn.net/?f=eq_%7BO_2%7D%20%3D%20%5Cfrac%7B0.3125~mol%7D%7B2%7D%20%3D%200.15625~mol)
Therefore, Mg is the limiting reactant.
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Step 5. According to the stoichiometry of this reaction:
![n_{Mg} = n_{MgO} = 0.0987~mol](https://tex.z-dn.net/?f=n_%7BMg%7D%20%3D%20n_%7BMgO%7D%20%3D%200.0987~mol)
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Step 6. Convert the number of moles of MgO into mass:
![m_{MgO} = 0.0987~mol\cdot 40.304~g/mol = 3.98~g](https://tex.z-dn.net/?f=m_%7BMgO%7D%20%3D%200.0987~mol%5Ccdot%2040.304~g%2Fmol%20%3D%203.98~g)
Answer:
physical change
Explanation:
there is no change in the water's chemical formula
Answer:
at the nuclear reactor site
Explanation:
In the United States, liquid high-level waste is stored in underground tanks pending vitrification. High-level waste is stored at the nuclear reactor site.
Such waste was created by the weapons programs of the cold war and the Manhattan project. This waste can not be vitrified as there were not enough funds for further processing.