If the equilibrium constant for the dissociation of lactic acid is 1.38 x 104, what is the AGO' for this reaction? A) 16.3kJ/mol B) -16.3 kJ/mol C) 16.96 kJ/mol D) -16.96 kJ/mol E) 27.5 kJ/mol

Answer:

option C two organisms with desired traits are bred

The pH and the pOH of an aqueous solution that is 0.045 M in HCl(aq) and 0.095 M in HBr(aq) at 25 °C is 1.35, and 12.98 respectively.

To calculate the pH and pOH of the solution, we need to use the concentration of the acidic solutions and the dissociation constants of HCl and HBr.

First, calculate the pH:

For HCl (aq):

[HCl] = 0.045 M

HCl is a strong acid and dissociates completely in water, so the concentration of H⁺ ions is equal to the concentration of HCl:

[H⁺] = 0.045 M

Taking the negative logarithm (base 10) of the H⁺ concentration gives us the pH:

pH = -log10(0.045)

pH = 1.35

Now, let's calculate the pOH:

For HBr(aq):

[HBr] = 0.095 M

HBr is also a strong acid, and its dissociation is similar to HCl. The concentration of H⁺ ions is equal to the concentration of HBr:

[H⁺] = 0.095 M

Again, taking the negative logarithm (base 10) of the H⁺ concentration gives us the pH:

pH = -log10(0.095)

pH = 1.02

Since pH + pOH = 14 (at 25 °C), we can calculate the pOH:

pOH = 14 - pH

pOH = 14 - 1.02

pOH = 12.98

Therefore, the pH of the solution is approximately 1.35, and the pOH is approximately 12.98.

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Answer:

Liver

Explanation:

The liver is an accessory digestive organ that is involved in detoxifying metabolites from the blood. It also produces compounds necessary for digestion. Some of these products include urea and bile.

If 4. 52g of the precipitate is formed, there would be 1.8 grams of sodium chloride reacted.

First we should write the balance reaction

AgNO₃(aq)+NaCl(aq)→AgCl(s)⏐↓+NaNO₃(aq)

We can observe that there is a 1:1 reaction. As a result, producing 1 mole of the precipitate from 1 mole of sodium chloride (AgCl).

In this case,

we should find the moles of sodium chloride used by dividing the mass by the mass molar of sodium chloride.

Precipitate formed in terms of moles: 4.52g/143.32 g/mol

The amount of precipitate that produced was 0.0315 moles.

Thus, 0.0315 moles of NaCl and 0.0315 moles of precipitate were generated.

Therefore NaCl reaction mass is 0.0315 moles times 58.5 g/mol, or 1.8 g.

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Based on the titration curve of the monoprotic acid, pKa of the monoprotic acid is closest to 8.0.

A titration curve of an acid is a curve obtained from the plot of the pH against the amount of base added.

The titration curve of an acid reveals its pKa.

The pKa corresponds to the midpoint of titration when equal concentrations of the acid and base have reacted.

From the titration curve above, the pKa of the monoprotic acid is closest to 8.0.

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When an element reacts with oxygen, the resulting compound's chemical formula is determined by the number of oxygen atoms that the element can bond with. This reaction produces a compound known as an oxide.

It is a compound that contains one or more oxygen atoms bonded to one or more other elements. The chemical formula of the resulting compound is determined by the number of oxygen atoms that the element can bond with.

To illustrate, let's look at the reaction between oxygen and the element sodium:2 Na(s) + O2(g) → 2 Na2O(s)

The chemical formula of the resulting compound is Na2O.

Here, sodium (Na) is an element, and oxygen (O) is also an element. The chemical formula of sodium oxide is Na2O.

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Answer:

According to mole concept,

Number of moles (n)= Given mass of Cu(NO3)2/Molar mass of Cu(NO3)2

= 3.13/187.56

= 0.01668 moles

Molarity (M) = Number of moles of solute (n) / Volume of solution in Liters (V)

Volume of solution in Liters (V) = Number of moles of solute (n) / Molarity (M)

= 0.01668/0.75

= 0.02224 L

= 22.24 mL

Thus, volume of the solution is 22.24 mL.

Answer:

2..............

................

Answer:

A. 2

Explanation:

What were Lamarck's ideas about evolution and Why were those ideas incorrect?

→ These and other examples show that Lamarck's theory does not explain how life formed and became the way it is. The other way that Lamarck's theory has been proven wrong is the study of genetics. Darwin knew that traits are passed on, but he never understood how they are passed on.

Answer:

2pounds

Explanation:

Given parameters:

Weight of Pedro's book  = \(\frac{19}{4}\) pounds

Weight of Blanca's book  = \(\frac{17}{7}\) pounds

Unknown:

How much more does Pedro's book weigh more than Bianca's book ?

Solution:

To Solve this problem, let us convert the fractions to decimal;

   Weight of Pedro's book  = 4.75 pounds

   Weight of Bianca's book  = 2.43 pounds

Differences  = 4.75pounds - 2.43 pounds

                     = 2.32 pounds

Estimating gives 2pounds

Among the given options, the correct answer is: "None of these are correct. There is no visible way you can tell."

In organic chemistry, magnesium sulfate (MgSO₄) is frequently employed as a drying agent to draw water out of organic solvents. When enough MgSO₄ has been employed to dry the organic layer, though, there is no visual or color change indication.

MgSO₄ is added in excess during the drying process to guarantee that all water is removed. When the anhydrous MgSO₄ is saturated, it will continue to absorb water but won't alter or dissolve into the solution. Therefore, it is impossible to determine whether enough drying agent has been administered if there are no obvious changes or MgSO₄ dissolves.

The chemist often uses other procedures, such as checking for the lack of water droplets or employing other analytical techniques, such as Karl Fischer titration or gas chromatography, to assess whether the organic layer has dried sufficiently.

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We determine if enough MgSO4 has been used to dry the organic layer after extraction by observing a change in the solution's clarity. Initially, the solution appears cloudy and upon adequate addition of MgSO4, the solution will become clear, indicating all water has been absorbed.

To determine if enough MgSO4 has been used to dry the organic layer after extraction, you will observe a visible clarity change in the solution. Initially, the organic liquid might appear slightly hazy or cloudy after the extraction. Upon addition of anhydrous MgSO4, it will bind with the water present, effectively drying out the solution. You will know that you've added enough MgSO4 when your organic layer becomes clear, indicating that all residual water has been absorbed. This is because MgSO4 works as a powerful drying agent that absorbs water molecules until it can't absorb any more, signified by a clear solution.

Let me simplify it further in a step-by-step procedure:

This visual inspection indicates that there is no more water for the MgSO4 to interact with, meaning that the solution is now dry.

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It's important to note that the acid/base imbalance caused by repeated vomiting can vary depending on individual factors, such as the frequency and severity of vomiting, as well as other underlying health conditions. If you or someone you know is experiencing repeated vomiting, it is advisable to seek medical attention to address the underlying cause and prevent further complications.

Repeated vomiting can lead to an acid/base imbalance in the body. The presence of hydrochloric acid (HCl) in the stomach contributes to the normal acidic environment needed for digestion. However, excessive or repeated vomiting can result in the loss of stomach acid, leading to a decrease in acid levels in the body. This can cause the following acid/base imbalance:

Metabolic Alkalosis: Vomiting removes stomach acid, which is primarily composed of HCl. The loss of HCl can disrupt the acid-base balance and result in an excess of bicarbonate ions (HCO3-) in the blood. Bicarbonate is a base, and an increase in its concentration can lead to metabolic alkalosis. Symptoms may include weakness, muscle twitching, confusion, and changes in heart rhythm.

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Answer:

A and E

Explanation:

Backbone is the part of skeletal system and is made of 26  vertebrae in total. The backbone and bones of lower limbs together serve to support the body's weight. Backbone surrounds and protects the spinal cord. Since the vertebrae of backbone are joints together by synovial joints, it allows the flexibility and movement of organisms.

Answer:

flexibility and movement

Answer: It’s C for me: To synthesis new DNA

Explanation:

Brainly please

Group A will have their rate of breathing measured in 350 F and Group B will have their rate of breathing measured in 700 F.Jennifer performed an experiment that if the temperature increases then the rate of breathing will also decrease.

Your breathing rate is another name for your respiratory rate. This is how many breaths you take per minute. You can calculate your breathing rate by counting the number of breaths you take in one minute while at rest.

This is because the increase in body temperature will increase the heart rate making it harder to breathe.

Thus, the temperature increases then the rate of breathing will also decrease.

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To produce 1000 kg of fishmeal (M = 1000 kg), you would need 3000 kg of pasta. To determine the amount of pasta required to produce 1000 kg of fishmeal, we need to consider the mass balance of the process. Let's break down the steps involved:

A. Extraction of fish oil:

The pasta obtained from the extraction stage contains 20% flour and 80% water. To calculate the amount of pasta, we need to determine the mass of flour and water in the pasta. Let's assume the total mass of the pasta is P kg.

Mass of flour = 20% of P = 0.2P kg

Mass of water = 80% of P = 0.8P kg

b. Drying of pasta:

During the drying stage, the pasta is dried in a rotary drum, resulting in fishmeal with 40% humidity. This means that the final fishmeal will contain 60% dry matter.

Let's assume the mass of the dried fishmeal is M kg.

Mass of dry matter = 60% of M = 0.6M kg

Since the dry matter in the fishmeal comes from the flour in the pasta, we can equate the mass of dry matter to the mass of flour:

0.6M kg = 0.2P kg

To produce 1000 kg of fishmeal, we want to find the corresponding value of P:

0.6M = 0.2P

P = (0.6M) / 0.2

P = 3M

Therefore, to produce 1000 kg of fishmeal (M = 1000 kg), you would need 3000 kg of pasta.

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Answer:

The number of balloons is 948.8.

Explanation:

The number of balloons can be calculated as follows:

\( N = \frac{V_{f}}{V_{T}} \)

Where:

\(V_{f}\): is the volume at 1.086 atm

\(V_{T}\): is the balloon volume = 2.414 L  

The volume at 1.086 atm can be found using Boyle's law:

\( P_{i}V_{i} = P_{f}V_{f} \)

\( V_{f} = \frac{P_{i}V_{i}}{P_{f}} = \frac{169.1 atm*14.71 L}{1.086 atm} = 2290.5 L \)

Now, the number of balloons is:

\( N = \frac{V_{f}}{V_{T}} = \frac{2290.5 L}{2.414 L} = 948.8 \)

Therefore, the number of balloons is 948.8.

I hope it helps you!        

Answer:

1.476 mol molecules

Explanation:

here's your answer dear friend❤❤

The statement is true. An dipole occurs when one molecule with a permanent dipole repels another molecules electrons causing the electrons to be more concentrated on one end of the molecule than another.

Dipole-dipole attraction:

Dipole-dipole forces are attractive forces between the positive end of one polar molecule and the negative end of another polar molecule.

For molecules of similar size and mass, the strength of these forces increases with increasing polarity. Polar molecules can also induce dipoles in nonpolar molecules, resulting in dipole-induced dipole forces.

A molecule with a permanent dipole moment is called a polar molecule. A permanent dipole occurs when two atoms in a molecule have substantially different electronegativity.

Therefore a dipole occurs when one molecule with a permanent dipole repels the electrons of another molecule to be more concentrated on one end of the molecule than another is a true statement.

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The study of food and its byproducts is known as food engineering. It is concerned with the production, preservation, and distribution of food to meet the needs of society. Thus, option D is correct.

Food engineering is the field of science that combinedly with the engineering process, stores and distributes food and bio-products. It includes various aspects, including production, handling, as well as packaging.

It is an important field as it deals with the sterilization conditions of the food, increased shelf life, and better storage and packages. It uses other fields like biology, chemistry, and microbiology to improve and focus on food production.

Therefore, food engineering focuses on the various aspects concerning food and bio-products.

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Therefore, 5 moles of CO2 are produced from the combustion of 100 g of methane (CH4).Hence, the answer is 5.

For the reaction CH4 2O2 ---> CO2 2H2O, how many moles of carbon dioxide are produced from the combustion of 100. g of methane?

Explanation:

The balanced chemical reaction for the combustion of methane (CH4) in the presence of oxygen (O2) is given by the chemical equation,

CH4 + 2O2 → CO2 + 2H2O

This chemical equation means that for every one mole of methane gas that undergoes combustion, two moles of oxygen gas are required, and this will produce one mole of carbon dioxide gas and two moles of water vapor.

So from the equation, we can see that the stoichiometric coefficients of methane and carbon dioxide are equal, which means that one mole of methane will produce one mole of carbon dioxide.

Therefore, the molecular weight of CH4 is 16 g/mol + 1 g/mol x 4 = 16 + 4 = 20 g/mol.

Using the atomic weights, we can find out the molecular weight of CO2, which is 12 g/mol + 16 g/mol x 2 = 44 g/mol.

So, one mole of methane is 20 g and from the balanced chemical equation, it produces one mole of carbon dioxide.

To find out the number of moles of carbon dioxide produced from 100 g of methane, we will use the following formula:

Moles = mass / molar mass= 100 / 20= 5 moles

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The vertical columns are groups

The horizontal rows are periods

Explanation:

groups are the vertical rows of element and each group have the same no of valence electron

periods are the horizontal row of element on the basis of no of orbital

Answer:

vegetarian

Explanation:

okay so dna is actually translated to veggies and being red blood cells are red witch translates to meat and being dna is veggies it does not like meat so it does not show up in the cells being the dna is vegetarian.  xoxo hope that helped, lots of love!

The number of oxygen atoms in each formula unit of lead nitrite is equal to four.

A formula unit can be used to represent the lowest whole number ratio of ions in an ionic compound. The formula mass of an ionic compound is equal to the sum of the atomic masses of the ions in the formula unit.

A formula unit can be described as an empirical formula of any covalent or ionic compound that can be used as an independent entity for stoichiometric calculations.

Given the chemical formula of the Lead(II) nitrite is Pb(NO₂)₂. The number of oxygen atoms in each formula unit is four.

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Answer:

1. Nose

2. Mouth

3. Larynx

4. Lung

5. RIght Bronchi

6. Diaphragm

7. Pharynx

8. Trachea

9. Left Bronchi

10. Bronchioles

11. Avoli

Explanation:

The pOH of a solution with a hydroxide ion, [OH-], of 7.34 X 10-³ M is 11.87.

pH and pOH are measures of the acidity or alkalinity of a solution. The pOH can be calculated from the pH using the following expression;

pOH + pH = 14

According to this question, a solution has a hydroxide ion, [OH-], of 7.34 X 10-³ M. The pH of a solution can be calculated as follows;

pH = - log {H}

pH = - log 0.00734

pH = 2.134

pOH = 14 - 2.134 = 11.87

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