Answer: The correct answer is Option a and d.
Explanation: Both the salts are ionic in nature because when dissolved in water, they dissociate into their respective ions.
Ionic compounds are held together by ionic bond. They are neutral compounds as both positive and negative charges neutralize each other. These compounds are also good conductors of electricity because of the presence of ions.
As both the salts have different molecular formula, both of them will have different crystal lattice system and hence, different crystal lattice energy.
From the above information, the correct options are option a and option d.
So the question ask that how to prepare 20ml of the liquid mixture having a denstiy of 2.7 g/cm and the best answer, base on the data you have given and further formulation of a solution, the answer would be CHCL3=11.73ml and CHBr3 = 8.268 ml. I hope you are satisfied with my answer
The best way to make an accurate measurement of the height of a polar liquid is to take the reading from the lowest point of the meniscus.
<h3>What is the meniscus of a liquid?</h3>
The meniscus of a liquid is a curved that occurs at the top of a liquid placed in a container as a result of the attractive forces between the molecules of a the liquid.
Polar substances such as water have a concave meniscus as they dip downwards.
Therefore, the best way to make an accurate measurement of the height of a polar liquid is to take the reading from the lowest point of the meniscus.
Learn more about meniscus at: brainly.com/question/10868896
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<span>A. The nucleus can be either positively charged or neutral.
The nucleus is located at the center of an atom wherein it contains the protons and the neutrons.</span>
Answer:
6.8266x10²³ formula units of Fe₃O₄ are needed
Explanation:
The reaction of Fe₃O₄ with Al occurs as follows
3Fe₃O₄ + 8Al → 4Al₂O₃ + 9Fe
<em>Where 3 moles of Fe₃O₄ react with 8 moles of Al</em>
<em />
To know the number of formula units of Fe3O4 needed for a complete reaction with Al we need to convert the mass of Al to moles in order to find the moles of Fe₃O₄ and the formula units:
<em>Moles Al -Molar mass: 26.98g/mol-:</em>
81.560g Al * (1mol / 26.98g) = 3.0230moles Al
<em>Moles Fe₃O₄:</em>
3.0230moles Al * (3 mol Fe₃O₄ / 8 mol Al) = 1.1336mol Fe₃O₄
<em>Formula units of Fe₃O₄:</em>
1.1336mol Fe₃O₄ * (6.022x10²³ FU / mol) =
<h3>6.8266x10²³ formula units of Fe₃O₄ are needed</h3>