2. A company makes mixtures of acetic acid and water such that the acetic acid is 15% of the total mass (weight) of the mixture. Let A be an unspecified number of grams of acetic acid, which can vary and let W be the corresponding number of grams of water in this type of mixture.
An equation that relates A and W is A = (3/17) W.

The percent yield of [tex]CaCO_{3}[/tex] is 36.6%.

To determine the limiting reagent, we need to compare the moles of each reactant to the stoichiometric ratio of the balanced chemical equation.

The balanced chemical equation for the reaction between CaCl2 and K2CO3 is:

[tex]CaCl_{2} + K_{2} CO_{3} → CaCO_{3} + 2KCl[/tex]

First, we calculate the number of moles for each reactant:

Moles of CaCl2 = mass / molar mass = 14.579 g / (40.08 g/mol + 2 * 35.45 g/mol) = 0.0971 mol

Moles of K2CO3 = mass / molar mass = 28.016 g / (2 * 39.10 g/mol + 12.01 g/mol + 3 * 16.00 g/mol) = 0.1370 mol

Next, we determine the stoichiometric ratio between CaCl2 and [tex]CaCO_{3}[/tex]:

According to the balanced equation, the ratio is 1:1. This means that 1 mole of CaCl2 reacts with 1 mole of [tex]CaCO_{3}[/tex].

Comparing the moles of CaCl2 (0.0971 mol) and K2CO3 (0.1370 mol), we can see that CaCl2 is the limiting reagent because there are fewer moles of CaCl2 compared to the stoichiometric ratio.

To calculate the percent yield of [tex]CaCO_{3}[/tex], we use the actual yield and theoretical yield. Theoretical yield is the maximum amount of CaCO3 that could be produced based on the limiting reagent.

The molar mass of [tex]CaCO_{3}[/tex]is 100.09 g/mol. Since the balanced equation shows a 1:1 ratio between CaCl2 and CaCO3, the moles of [tex]CaCO_{3}[/tex]formed will be the same as the moles of CaCl2.

The theoretical yield of [tex]CaCO_{3}[/tex] is: Moles of CaCO3 = Moles of CaCl2 = 0.0971 mol

Mass of [tex]CaCO_{3}[/tex] (theoretical) = Moles of [tex]CaCO_{3}[/tex] * Molar mass of CaCO3 = 0.0971 mol * 100.09 g/mol = 9.72 g

The percent yield of CaCO3 is calculated as:

Percent yield = (Actual yield / Theoretical yield) * 100

Percent yield = (3.558 g / 9.72 g) * 100 = 36.6%

Therefore, the percent yield of CaCO3 is 36.6%.

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Answer:

CaCl3 is the limited reagent

Explanation:

The cell's reaction is not disrupted, and the electrons continue to flow between the two half-cells through the wire to produce electricity.

In a voltaic cell, a salt bridge is utilized to maintain the electrical neutrality of the half-cells. A salt bridge is an ionic conductor that allows the movement of cations and anions between the two half-cells without allowing any mixing of the electrolytes.

Its primary function is to prevent the buildup of electric charges on the electrodes, which would result in a sudden stop of the reaction in the cell.What is a salt bridge-A salt bridge is an electrolytic channel that connects the oxidation and reduction half-cells of a voltaic cell to allow ions to flow between them.

The salt bridge is essential to maintain the electrical neutrality of the half-cells and maintain the cell's electrical energy. What is the purpose of the salt bridge in this cell?In the given cell, the salt bridge purpose is to keep the electrical neutrality of the half-cells.

The salt bridge ensures that the cell's two half-cells maintain their neutrality by providing a flow of ions from one half-cell to the other. As a result, the cell's reaction is not disrupted, and the electrons continue to flow between the two half-cells through the wire to produce electricity.

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Answer:

approximately 251.55 grams of AuCl3 would contain 5.0 x 10^23 molecules.

Two key criteria that engineers must prioritize are efficiency and safety. By emphasizing efficiency and safety during process development, engineers can create robust and reliable processes that not only maximize productivity but also prioritize the well-being of personnel and the environment.

When developing a process, engineers need to consider several important criteria. Two key criteria that engineers must prioritize are efficiency and safety.

Efficiency is crucial in process development to ensure optimal use of resources, time, and energy. Engineers strive to design processes that maximize productivity, minimize waste, and reduce costs. This involves optimizing reaction conditions, streamlining workflow, and implementing automation where possible. Efficiency considerations also extend to energy consumption, raw material utilization, and overall process sustainability.

Safety is another critical aspect that engineers must prioritize. They need to identify and mitigate potential hazards associated with the process, ensuring the safety of both personnel and the environment. This involves conducting thorough risk assessments, implementing safety protocols, and designing equipment and systems with safety features. Engineers must also consider the safe handling and storage of materials, as well as potential risks during transportation and disposal.

By emphasizing efficiency and safety during process development, engineers can create robust and reliable processes that not only maximize productivity but also prioritize the well-being of personnel and the environment.

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