How is it possible to eat acidic things without changing your blood pH? Select all that apply

Because NaCl takes more energy to break it's bigger.

For NaCl, the structure or lattice formation enthalpy is -787 kJ mol-1. Therefore, the lattice dissolution enthalpy is always positive and the lattice formation enthalpy is always negative. The reason that NaCl has the highest lattice enthalpy is that for similar anions, cations with smaller radii have higher lattice enthalpies.

If we want to talk about the amount of energy released when a lattice forms from scattered gas ions we should use the lattice formation enthalpy. MgO has a higher lattice energy because each ion carries two unit charges compared to one in NaCl. NaCl is a compound with higher lattice energy. Description Lattice energy is defined as the energy released when the combination of its constituent ions forms one mole of an ionic compound.

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A solution is made by mixing 114.g of benzene C6H6 and 83.g of acetyl bromide CH3COBr, the mole fraction of benzene in this solution is 1.45mol.

The term molar mass is defined as the compound is often calculated by adding the quality atomic masses in g/mol of the constituent atoms.

Molar mass of CH3COBr,

Molar Mass = 2 × MM(C) + 3 × MM(H) + 1 × MM(O) + 1 × MM(Br)

= 122.944 g/mol

Molar mass of C6H6,

MM = 6 × MM(C) + 6 × MM(H)

= 6 × 12.01 + 6 × 1.008

= 78.108 g/mol

n(CH3COBr) = mass/molar mass

= 83 /122.944

= 0.675

n(C6H6) = mass/molar mass

= 114 / 78.108

= 1.45

n(CH3COBr),n1 = 0. 675mol

n(C6H6),n2 = 1. 45mol

Thus, the mole fraction of benzene in this solution is 1.45mol.

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Answer: D. A chemical reaction releases thermal energy.

Explanation:  

Hope this helps! <3 :)

Answer: thermal energy

Explanation: Thermal energy is what we call energy that comes from heat.

The one that best describes the regioselectivity and stereospecificity in the Bronsted acid-catalyzed addition of water to an alkene reaction is Markovnikov orientation with syn-addition. Hence option A.

The preference of E and Y for bonds with carbon atoms an or b is referred to as the Markovnikov orientation. The example below demonstrates how, depending on the reaction conditions, a proton acid HY can add to the -bond of an unsymmetrical alkene with either a Markovnikov or an anti-Markovnikov orientation.

When hydrogen itself forms a double bond with the least-substituted carbon atom in asymmetrical alkenes or alkynes, the Markownikoff or Markovnikov rule determines the orientation of the electrophilic addition of hydrogen halides. (or triple bond). So, as conculsion, option A is correct.

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Complete question - which of the following describes correctly about the regioselectivity and stereospecificity in the bronsted acid-catalyzed addition of water to an alkene reaction?

Group of answer choices

1. markovnikov orientation with syn-addition

2. markovnikov orientation with anti-addition

3. anti-markovnikov orientation with syn-addition

4. anti-markovnikov orientation with anti-addition

5. markovnikov orientation with both syn- and anti-addition

Answer:

Potential and Kinetic energy

Explanation:

The concentration of the NaOH solution will be approximately 0.096 M.

To calculate the concentration of the sodium hydroxide (NaOH) solution, we need to use the balanced chemical equation and the given information. KHP (potassium hydrogen phthalate) is oftenly used as a primary standard in acid-base titrations.

The balanced equation for the reaction between NaOH and KHP will be

NaOH + KHP → NaKP + H₂O

From the equation, we can see that the molar ratio between NaOH and KHP is 1:1.

First, let's calculate the number of moles of KHP using its molar mass:

moles of KHP=mass of KHP/molar mass of KHP

= 0.50 g / (204.23 g/mol)

≈ 0.002448 mol

Since the molar ratio between NaOH and KHP is 1:1, the moles of NaOH required for titration will also be approximately 0.002448 mol.

Now, we can calculate the concentration of the NaOH solution:

concentration of NaOH=moles of NaOH/volume of NaOH solution (in liters)

To convert the volume from milliliters (mL) to liters (L), we divide by 1000:

volume of NaOH solution = 25.45 mL / 1000

= 0.02545 L

concentration of NaOH = 0.002448 mol / 0.02545 L

≈ 0.096 mol/L

Therefore, the concentration of the NaOH solution is approximately 0.096 M.

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Answer:

The destiny of silicon,which is 2.33 g/cm3

Explanation:

Answer:

Explanation:

A)  O2 (non polar covalent)

B)  HF  (polar covalent)

C) NaCl (because its ionic)

im not 100% sure hope it helps

It is hazardous to look directly into the crucible when the magnesium first reacts with the oxygen because the reaction produces an extremely bright light that can damage your eyes.

This light is created when the magnesium reacts with the oxygen in the air to form magnesium oxide. The reaction is highly exothermic, meaning that it releases a large amount of energy in the form of heat and light.

The bright light produced by the reaction can be intense enough to cause temporary or even permanent damage to your eyes if you look directly at it without proper protection. Therefore, it is crucial to wear safety goggles or other protective eyewear when conducting this type of experiment in the lab.

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In the reaction of 30.0 g of propane and 75.0 g of oxygen, oxygen is the limiting reagent.

The chemical equation of the reaction of propane and oxygen is as follows,

C₃H₈ + 5O₂ → 3CO₂ + 4H₂O

Here, 30 grams of propane reacts with 75 grams.

Step 1- First find the moles of oxygen and propane.

Moles of propane = mass/molar mass

Moles of propane = 44/30

Moles of propane = 1.21 moles.

Now, moles of oxygen = 75/18

Moles of oxygen = 4.16 moles.

Step2- compare the moles,

Now, we see, as per the reaction, for every one mole of propane. there should be 5 moles of oxygen, hence,

1 mole propane = 5 moles oxygen

1.21 moles propane = 6.05 moles of oxygen.

So, 6.05 moles of oxygen are required but we have only 4.16 moles, so, here, oxygen is the limiting reagent.

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The given statement "The value of equilibrium constant of a reaction depends upon the initial values of concentration of reactants" is false.

It is because the value of the equilibrium constant is a constant and it does not change with the change in concentration of reactants or products. The equilibrium constant is defined as the ratio of the concentrations of products to reactants raised to the power of their stoichiometric coefficients and it is a constant at a particular temperature.

Equilibrium constant is a numerical value that measures the equilibrium between the products and reactants of a chemical reaction. Equilibrium constant (K) is a function of the concentrations of the reactants and products at a particular temperature. It is an important quantity in understanding chemical reactions and predicting the direction of the reaction.

The value of the equilibrium constant is dependent on the temperature and it is independent of the initial concentrations of the reactants and products. The equilibrium constant is a function of the thermodynamics of the reaction and it is not dependent on the kinetics of the reaction. Kinetics deals with the rate of the reaction while thermodynamics deals with the equilibrium state of the reaction.

The equilibrium constant can be calculated from the concentrations of the reactants and products at equilibrium. If the value of the equilibrium constant is greater than one, then the reaction favors the formation of products. If the value of the equilibrium constant is less than one, then the reaction favors the formation of reactants. If the value of the equilibrium constant is equal to one, then the reaction is said to be at equilibrium.

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The answer you’re looking for is C.

It represented a change in scientific thought.

The answer is C.

Why was Copernicus's discovery called Copernican Revolution?

The "Copernican Revolution" is named for Nicolaus Copernicus, whose Commentariolus, written before 1514, was the first explicit presentation of the heliocentric model in Renaissance scholarship.

The Copernican Revolution gives us an important framework for understanding the Universe. We do not occupy a special or privileged place in the Universe. The Universe and everything in it can be understood and predicted using a set of basic physical laws (“rules”).

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The text discusses the issue of global warming caused by the release of greenhouse gases, primarily from human activities such as burning fossil fuels and deforestation. It highlights the potential consequences of rising temperature.

The greenhouse effect explains how heat is trapped at the Earth's surface by "greenhouse gases." You may think of these heat-trapping gases as a blanket keeping the Planet warmer than it otherwise would be.

Water vapour, carbon dioxide, methane, and other airborne gases all contribute to the greenhouse effect, which warms the Earth's surface and troposphere (lowest layer of the atmosphere).

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Answer:

boiling-point elevation

Explanation:

Answer:

boiling-point elevation

Explanation:

Answer:

https://quizlet.com/259730102/chemistry-unit-10-flash-cards/

Explanation:

The solubility of the unknown liquid in water is 1.2 mL/mL. This is because 11 drops of water (1 drop + 6 drops) were needed to dissolve 5 drops of the unknown liquid.

When the unknown liquid was first added to 1 drop of water, two phases were present. This means that the unknown liquid was not completely soluble in water. However, when 6 more drops of water were added, the two phases disappeared and a single phase was formed.

This indicates that the unknown liquid is soluble in water, but only up to a certain point. The solubility of the unknown liquid in water is therefore 1.2 mL/mL.

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Answer:it is used to fulfill their own needs

Explanation:

Diverse gases are also needed by aquatic species for their metabolic processes. Gases can be employed by aquatic species to meet their own demands because of how easily they dissolve in water. This is how aquatic life benefits from various gases' solubility.

The ability of a material, the solute, to combine with another substance, the solvent, is known as solubility. Insolubility, or the solute's inability to create such a solution, is the opposite attribute.

Carbon dioxide and dissolved oxygen are essential for marine life. The process of photosynthesis is used by marine plants to produce carbohydrates from dissolved carbon dioxide, sunlight, and water. As a result, oxygen is released into the water.

Because more atmospheric carbon dioxide is dissolving in the water, the ocean has become more acidic during the past few decades. The mineral balance in the water is impacted by higher acidity, which might make it more challenging for some marine species to develop their protective skeletons or shells.

Thus, This is how aquatic life benefits from various gases' solubility.

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The factors that likely played a role in Jessie's fainting episode are a. chronic hyperglycemia, b. her anticonvulsant medication, c. overexertion while saving the drowning boy, and e. diabetic ketoacidosis.

Chronic hyperglycemia, indicated by option a, can affect blood flow and oxygen supply to the brain, potentially leading to fainting episodes. Anticonvulsant medication, mentioned in option b, can have side effects such as dizziness or lightheadedness, which may contribute to fainting. Overexertion, as stated in option c, can cause fatigue, dehydration, and low blood pressure, all of which increase the risk of fainting. Diabetic ketoacidosis, noted in option e, is a serious complication of diabetes that can lead to electrolyte imbalances and dehydration, potentially triggering a fainting episode.

Options a, b, c, and e are the correct answers.

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Explanation:

your answer is Kelvin because it is the SI unit of temperature

According to Charle's law, the volume of the given mass of a gas is directly proportional to its absolute temperature provided that the pressure is constant. Mathemically;

where;

V1 and V2 are the initial and final volume of the gas

T1 and T2 are the initial and final temperatures of the gas (in Kelvin)

Given the following parameters:

Substitute the given parameters into the formula;

Therefore the volume of the gas at 20°C is approximately 97.67cm³

Answer:

Error or mistakes during DNA replication is accountable for two-thirds or 66% of the cancer cases. These random and unpredictable errors called mutations that occur during the division of a cell as an error in copying of DNA.

DNA replication has three main steps:

Opening and separation of DNA strands of a helix - carried by an enzyme known as helicase that breaks the hydrogen bonds between nitrogenous bases of the helix of DNA.

The priming of the template strand - DNA primase helps RNA primers to bind to both strands at 3' end as soon as it separated

strat assembling the segments of new DNA on strands called elongation of the strands with help DNA polymerase I and after forming new strands the termination of the replication.

Errors or mistakes can occasionally take place if DNA polymerase inserts a wrong base during elongation of the strands.

Answer:

it's-B.....................

Answer:

True

Explanation:

When a hurricane is dangerous enough that authorities say to evacuate, you should for your own safety.

\({ \qquad\qquad\huge\underline{{\sf Answer}}} \)

Let's solve ~

Initial concentration of weak acid HA = 0.200 M

and dissociation constant (\({ \alpha} \)) is :

\(\qquad \sf  \dashrightarrow \: \alpha = \frac{dissociation \: \: percentage}{100} \)

\(\qquad \sf  \dashrightarrow \: \alpha = \frac{9.4}{100} = 0.094\)

Now, at initial stage :

At equilibrium :

Now, we know :

\(\qquad \sf  \dashrightarrow \: { K_a = \dfrac{[H+] [A-]}{[HA]}} \)

( big brackets represents concentration )

\(\qquad \sf  \dashrightarrow \: { K_a = \dfrac{0.0188×0.0188}{0.1812}} \)

\(\qquad \sf  \dashrightarrow \: { K_a = \dfrac{0.00035344}{0.1812}} \)

\(\qquad \sf  \dashrightarrow \: { K_a \approx 0.00195 } \)

\(\qquad \sf  \dashrightarrow \: {K_a \approx 1.9 × {10}^{-3} } \)

According to the problem, we have a 0.200 M solution of a weak acid HA that is 9.4% ionized. To find the Ka (acid dissociation constant) for HA, we can use the percent ionization formula:

From this formula, we know that [H+] (the concentration of hydrogen ions) is equal to 9.4% of [HA]initial, and [HA]initial is equal to the initial concentration of the weak acid, which is 0.200 M. Solving for [H+], we get:

Now we can use the equation for Ka:

We don't know the concentration of the conjugate base (A-) at this point, but we can assume that it is equal to [H+] because the weak acid is only slightly ionized. Therefore, we can substitute [A-] = [H+] = 0.0188 M into the equation and solve for Ka:

\(\sf Ka = \dfrac{(0.0188)^2}{(0.200 - 0.0188)} = \bold{1.8 \times 10^{-3}}\)

So the answer is \(\bold{ B.\: 1.8 \times 10^{-3}}\).

I hope this helps!

The value of 8D of water vapor in isotopic equilibrium with fresh water whose 8D value is -65%0 is -67.79125‰.

The expression for calculating 8D of water vapor in isotopic equilibrium with fresh water can be given by: 8D = α 8D (vapor) + (1 - α) 8D (liquid). Where,α is a fractionation factor and 8D (vapor) and 8D (liquid) are the deuterium enrichments in water vapor and liquid, respectively.

The value of α is given by:a (liquid-vapor) = 1.090So,α = (a (liquid-vapor) - 1) / (a (liquid-vapor) + 1)α = (1.090 - 1) / (1.090 + 1)α = 0.045So,8D = α 8D (vapor) + (1 - α) 8D (liquid)Given,8D (liquid) = -65‰ (‰ denotes permil, which is equal to parts per thousand)

Substitute the given values in the expression and simplify:8D = 0.045 × 8D (vapor) + (1 - 0.045) × (-65)8D = 0.045 × 8D (vapor) - 61.9258D + 2.79125 = 8D (vapor)

Therefore,8D (vapor) = 8D - 2.79125= -65 - 2.79125= -67.79125‰ (answer)Therefore, the value of 8D of water vapor in isotopic equilibrium with fresh water whose 8D value is -65%0 is -67.79125‰.

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Potatoes were originally cultivated in South America and were introduced to Europe during the Columbian Exchange, which was a period of cultural and biological exchange between the New World and the Old World. The correct option is D.

While grapes, wheat, barley, and horses were also part of the Columbian Exchange, potatoes were one of the most significant and widely adopted crops that came from the New World.

The Columbian Exchange was a widespread transfer of plants, animals, culture, human populations, technology, and ideas between the Americas and the Old World in the 15th and 16th centuries. Among the various products that were exchanged, potatoes made their way to Europe from the Americas, becoming a significant crop and staple food in European cuisine.

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Answer:

C: Carbon monoxide - Acidic nature

Explanation:

A) Beryllium is not soluble in water but yet it reacts with an acid and a base. Therefore, since it exhibits both basic and acidic nature, we say it is Amphoteric in nature. Thus it is correct

B)potassium super oxide has the formula KO2. It reacts with acid to form salt called potassium chloride. Thus, it is basic in nature.

C) Carbon monoxide does not react with acids or bases. Thus, it doesn't show either an acidic or basic property and we say it is a neutral oxide. This option is incorrect

D) Bismuth oxide is a basic oxide because it displays properties of a base. This options is correct

To infuse the loading dose of magnesium sulfate supplied as 4g in 250mL LR over 20 minutes, you would set the IV pump to an infusion rate of 750 mL/hr.

To calculate the mL/hr rate for infusing a loading dose of magnesium sulfate supplied as 4g in 250mL of LR (Lactated Ringer's) solution over 20 minutes, we need to convert the infusion time to hours and then determine the infusion rate.

First, let's convert the infusion time of 20 minutes to hours:

20 minutes = 20/60 hours = 1/3 hours (since there are 60 minutes in an hour).

Next, we can calculate the mL/hr rate using the following formula:

Infusion rate (mL/hr) = Total volume (mL) / Infusion time (hours)

In this case, the total volume is 250mL, and the infusion time is 1/3 hours.

Infusion rate (mL/hr) = 250mL / (1/3) hours

To divide by a fraction, we can multiply by the reciprocal of the fraction:

Infusion rate (mL/hr) = 250mL * (3/1) hours

Calculating the product:

Infusion rate (mL/hr) = 750mL/hr.

Therefore, to infuse the loading dose of magnesium sulfate supplied as 4g in 250mL LR over 20 minutes, you would set the IV pump to an infusion rate of 750 mL/hr.

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The balanced equation states that for every 6 moles of HNO3 consumed, 2 moles of H2O are produced.

In this case, we are given that 96.00 moles of HNO3 are consumed in the reaction. To find the number of moles of H2O produced, we can use the stoichiometry of the balanced equation. We know that for every 6 moles of HNO3 consumed, 2 moles of H2O are produced. Therefore, we can use the proportion: 2 moles H2O/ 6 moles HNO3 = x moles H2O / 96.00 moles HNO3. Solving for x gives: x = (2 * 96.00) / 6 = 16 moles of H2O are produced when 96.00 moles of HNO3 are consumed. It's important to note that the balanced equation provides the stoichiometry of the reaction which helps us to calculate the number of moles of product produced from the given number of moles of reactant. The balanced equation also tells us that the reaction is stoichiometrically balanced and the number of moles of reactant and product are in a defined ratio.

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