PLEASE
Why don't the particles in a solid move past one another?
A. They have no motion and cannot even vibrate in place.
B. They don't have enough energy to overcome the attractions
between them.
C. They bounce off the walls of their container and back into place.
D. They move independently of one another.

The isoelectric point (pI) of aspartic acid is approximately 5.9. At this pH, aspartic acid carries no net charge.

Aspartic acid (abbreviated as Asp or D) is an amino acid that can exist in different ionic forms depending on the pH of the solution. It has two ionizable groups: the carboxyl group (-COOH) and the amino group (-NH2).

At low pH (pH 2), the solution is acidic. The carboxyl group (-COOH) is protonated (loses a hydrogen ion, H+) and becomes -COOH2+. The amino group (-NH2) remains protonated and becomes -NH3+. Therefore, at pH 2, both ionizable groups are positively charged.

At high pH (pH 9), the solution is alkaline. The carboxyl group (-COOH) loses a proton and becomes -COO-. The amino group (-NH2) remains protonated and becomes -NH3+. Therefore, at pH 9, the carboxyl group is negatively charged, and the amino group is positively charged.

The isoelectric point (pI) of an amino acid is the pH at which it carries no net charge. To calculate the pI of aspartic acid, we need to determine the pH at which the two ionizable groups have equal positive and negative charges.

The pKa values for the carboxyl group of aspartic acid is around 2.0, and for the amino group, it is around 9.8.

Since the pI is the average of the pKa values of the ionizable groups, we can calculate the pI of aspartic acid as:

pI = (pKa1 + pKa2) / 2

pI = (2.0 + 9.8) / 2 = 5.9

Therefore, the isoelectric point (pI) of aspartic acid is approximately 5.9. At this pH, aspartic acid carries no net charge.

Learn more about isoelectric point from the given link:

https://brainly.com/question/14895346

#SPJ11

Answer:

The mass left after 24.6 years is 25.0563 grams

Explanation:

The given parameters are;

The mass of the hydrogen-3 = 100 grams

The half life of hydrogen-3 which is also known as = 12.32 years

The formula for calculating half-life is given as follows;

\(N(t) = N_0 \times \left (\dfrac{1}{2} \right )^{\dfrac{t}{t_{\frac{1}{2} }} }\)

Where;

N(t) = The mass left after t years

N₀ =  The initial mass of the hydrogen-3 = 100 g

t = Time duration of the decay = 24.6 years

\(t_{\frac{1}{2} }\) = Half-life = 12.32 years

\(N(24.6) = 100 \times \left (\dfrac{1}{2} \right )^{\dfrac{24.6}{12.32}} } = 25.0563\)

The mass left after 24.6 years = 25.0563 grams.

Cooking an egg is endothermic because the egg gains heat from the surrounding. The formation of snow is exothermic because water loses heat to the surroundings when it becomes snow.

The endothermic process refers to the process in which heat is absorbed, while the exothermic process refers to the process in which heat is released.

The egg receives/absorbs heat from a heat source,(e.g. the stove), which raises the temperature of the egg and causes it to cook, making it an endothermic process.

On the other hand, heat is released from the water molecule when the water vapor present in the atmosphere condenses and freezes to form snow. Therefore,  the formation of snow is exothermic.

Read more about endothermic and exothermic processes on:

https://brainly.com/question/30624362

Cooking an egg is endothermic because the egg gains heat from the surroundings, while the formation of snow is exothermic because water loses heat to the surroundings, resulting in the formation of snow.

In terms of energy transfer, an endothermic process absorbs heat from the surroundings, while an exothermic process releases heat to the surroundings. When cooking an egg, heat is applied to the egg through methods such as boiling, frying, or baking. The egg absorbs heat from the surrounding environment to cook and undergo chemical and physical changes. As a result, cooking an egg is an endothermic process because the egg gains heat from its surroundings.

On the other hand, the formation of snow occurs when water vapor in the atmosphere condenses into ice crystals. This process is exothermic because water vapor loses heat to the surroundings, causing the water molecules to slow down and form a solid structure. The release of heat during this phase transition results in the formation of snow. Therefore, the correct explanation is that cooking an egg is endothermic because the egg gains heat from the surroundings, while the formation of snow is exothermic because water loses heat to the surroundings, leading to the formation of snow.

Learn more about molecules here: https://brainly.com/question/14130817

#SPJ11

Answer:

sadr

Explanation:

Pls give brainlist

The empirical formula of the compound is KClO2.

To determine the empirical formula of a compound based on its percentage composition, we need to convert the percentages into moles and find the simplest whole-number ratio of the elements.

Given:

Percentage of potassium = 36.70%

Percentage of chlorine = 33.27%

Percentage of oxygen = 30.03%

Assume we have a 100g sample of the compound. This means we have:

Mass of potassium = 36.70g

Mass of chlorine = 33.27g

Mass of oxygen = 30.03g

Next, we need to convert the masses into moles. We do this by dividing each mass by the respective molar mass.

The molar masses are:

Potassium (K) = 39.10 g/mol

Chlorine (Cl) = 35.45 g/mol

Oxygen (O) = 16.00 g/mol

Calculating the moles:

Moles of potassium = 36.70g / 39.10 g/mol = 0.938 mol

Moles of chlorine = 33.27g / 35.45 g/mol = 0.937 mol

Moles of oxygen = 30.03g / 16.00 g/mol = 1.877 mol

Now, we find the simplest whole-number ratio by dividing each mole value by the smallest mole value.

Dividing by 0.937 (smallest value):

Moles of potassium = 0.938 mol / 0.937 mol = 1.001 ≈ 1

Moles of chlorine = 0.937 mol / 0.937 mol = 1

Moles of oxygen = 1.877 mol / 0.937 mol = 2

Therefore, the empirical formula of the compound is KClO2.

learn more about compound here

https://brainly.com/question/14117795

#SPJ11

Answer:  \(CaCO_3(s)\rightarrow CaO(s)+CO_2(g)\) , 0.533 L

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

\(CaCO_3(s)\rightarrow CaO(s)+CO_2(g)\)

According to avogadro's law, 1 mole of every substance occupies 22.4 L of volume at STP.

Number of moles =\(\frac{\text {given mass}}{\text {Molar mass}}\)

moles of calcium carbonate = \(\frac{2.38g}{100g/mol}=0.0238mol\)

As 1 mole of calcium carbonate produces = 22.4 L of carbon dioxide at STP

Thus 0.0238 moles of calcium carbonate produces =\(\frac{22.4 L}{1}\times 0.0238=0.533L\) of carbon dioxide at STP

The balanced equation is \(CaCO_3(s) \rightarrow CaO(s) + CO_2(g)\)

The number of liters of carbon dioxide that should be produced is 0.533L

As per this law, the mass could neither be developed nor be destroyed. So, the mass of products should be equivalent to the mass of reactants. The number of atoms of every element has to be the similar on reactant and product sides. Due to this, the chemical equations are balanced.

\(CaCO_3(s) \rightarrow CaO(s) + CO_2(g)\)

As per this law,  1 mole of every substance occupies 22.4 L of volume at STP.

So,

We know that

Number of moles = \(given\ mass \div molar\ mass\)

Now the moles of calcium carbonate is \(= 2.38 \div 100\) = 0.0238 mol

Since 1 mole of calcium carbonate generated = 22.4 L of carbon dioxide at STP

So, 0.0238 moles of calcium carbonate generated

\(= 22.4 \div 1 \times 0.0238 \\\\= 0.533L\)

 of carbon dioxide at STP

Learn more about the equation here: https://brainly.com/question/15844891

False. Bottled water sold within the same state in which it was retrieved is not exempt from FDA inspection.

The U.S. Food and Drug Administration (FDA) regulates bottled water as a food product, and its standards and requirements apply regardless of the distribution within a single state. The FDA has established the Current Good Manufacturing Practices (cGMP) specifically for bottled water manufacturers to ensure the safety and quality of the product. These regulations cover various aspects of production, including source water protection, processing, labeling, and quality control.

The FDA conducts inspections and enforces compliance with these regulations to verify that bottled water companies meet the necessary standards. Inspections can be scheduled or unannounced, and they help ensure that the bottled water industry adheres to appropriate manufacturing practices and safeguards public health.

By subjecting bottled water to FDA inspections, regardless of the state of sale, the regulatory agency aims to maintain the safety and quality of the product and provide consumers with confidence in the bottled water they purchase.

Learn more about FDA inspection.

https://brainly.com/question/14498170

#SPJ11

False

The statement that bottled water sold within the same state in which it was retrieved is exempt from FDA inspection is false.

What is FDA inspection?

The FDA (Food and Drug Administration) inspection ensures that the organization complies with the federal regulations, laws, and policies. They regulate food, drugs, medical equipment, cosmetics, and other products to ensure the safety of people.

The inspection includes reviewing documents, facilities, procedures, quality control, and testing to confirm that the company complies with all the guidelines and standards set by the government.

The inspection also involves physical inspections of products, food, and facilities. The primary aim of FDA inspection is to protect public health from harm.

Therefore, it is mandatory for all food and beverage products to comply with FDA standards. So, bottled water sold within the same state in which it was retrieved is not exempt from FDA inspection.

Hence, the given statement is false.

To know more about topic FDA inspection here: https://brainly.com/question/32798409

#SPJ#

About 5.06 half-lives must pass before only 1/32 of the parent element remains undecayed to a daughter product.

The number of half-lives that must pass before only 1/32 of the parent element remains undecayed to a daughter product can be calculated using the formula

N = N₀(½)ⁿ,

where N is the remaining amount, N₀ is the initial amount, n is the number of half-lives that have passed.

We are given that the remaining amount is 1/32 of the initial amount. Therefore, we can write:

N = (1/32)N₀

We need to find n, the number of half-lives. Let's substitute the values into the formula and solve for n:

N = N₀(½)ⁿ
(1/32)N₀ = N₀(½)ⁿ
Divide both sides by N₀:
(1/32) = (½)ⁿ
Taking the logarithm of both sides, we get:
log(1/32) = log(½)ⁿ
log(1/32) = n log(½)
Using the fact that log(½) = -0.301, we can solve for n:

log(1/32) = n log(½)
log(1/32) = -0.301n
n = log(1/32) / -0.301
n ≈ 5.06
Therefore, about 5.06 half-lives must pass before only 1/32 of the parent element remains undecayed to a daughter product.

Learn more about half-life: https://brainly.com/question/25750315

#SPJ11

Answer:2

Explanation:

Answer:

A and B is the answer

Answer:

option b

Explanation:

Answer:

the first statement is correct...

it only supports the main idea of the law of conservation of mass...

hope I can help you...

Answer:

He was able to count the number and type of butterflies that visited the garden,

Explanation:

A. The reaction would remain in equilibrium

Given

Reaction

H₂ + I₂ ⇔ 2HI

Required

the effect of pressure changes

Solution

In the equilibrium system :

Reaction = - action  

⇒shift the reaction to the right or left.  

The pressure usually affects the gas equilibrium system(only count the number of moles of gases)

The addition of pressure, the reaction will shift towards a smaller reaction coefficient  ((the fewest moles of gas  )

Reaction

H₂ + I₂ ⇔ 2HI

The reactant side of the equation has 2 moles of a gas(1 mole H₂ and 1 mole  I₂) ; the product side has 2 moles HI

So the total number of moles from both sides is the same(2 moles) so that the change in volume (pressure) does not change the direction of equilibrium⇒No shift will occur

Answer:

A. The reaction would remain in equilibrium

Explanation:

There are 1.31 x 1022 bromide ions in 2.00 g of \(MgBr_2\).

For more questions on bromide ions

https://brainly.com/question/29228517

#SPJ8

Answer:

b,d,f

Explanation:your welcome give brainilest

Answer:

b,d,f

Explanation:

Answer:

opposite

Explanation:

mark me as a brainlist please

The frequency of this light in Hz is 3.5×10¹⁴

So, the correct answer is A.

The frequency of a certain kind of light with a wavelength of 850 nm can be determined using the formula f=c/λ, where f is the frequency, c is the speed of light and λ is the wavelength.

Substituting the given values, we get f = (2.998×10⁸ m/s)/(850×10⁻⁹m) = 3.53×10¹⁴ Hz.

Therefore, the correct answer is option a, 3.5×10¹⁴ Hz.

It is important to note that the speed of light is a constant value and is typically denoted by the letter "c".

The wavelength and frequency of electromagnetic radiation are inversely proportional, meaning that as the wavelength decreases, the frequency increases. This relationship is known as the wave-particle duality of light and is a fundamental concept in physics.

Learn more about wavelength at

https://brainly.com/question/28457610

#SPJ11

The sentence that suggests video games cannot replace real life experiences is "But it's so much more fun to shred a guitar in real life than it is to play one on 'Rock Band.'"


The sentence "But it's so much more fun to shred a guitar in real life than it is to play one on 'Rock Band'" suggests that video games cannot replace real life experiences. This sentence implies that the real-life experience of playing a guitar is more enjoyable and fulfilling compared to playing a simulated version of it in a video game.

It highlights the difference in the level of satisfaction and engagement one can derive from actual real-life activities. This sentence implies that while video games can be enjoyable and help develop skills, they cannot fully replicate or replace the experiences and enjoyment that come from engaging in activities in real life.

Learn more about skills here:

https://brainly.com/question/32015606

#SPJ11

In any aqueous solution at 25°C, the ionic-product of water (Kw) is a constant value equal to 1.0 x 10⁻¹⁴ mol²/L².

Due to the auto-ionization or self-ionization of water, water molecules dissociate into hydronium ions (H₃O⁺) and hydroxide ions (OH⁻). At 25°C, the Kw is equal to 1.0 x 10⁻¹⁴ mol²/L².

This constant value of Kw plays a crucial role in understanding the acidity and basicity of aqueous solutions. It helps to establish the relationship between the concentrations of hydronium and hydroxide ions, as their product remains constant at a given temperature. The pH and pOH scales are derived from this relationship, providing a convenient method for measuring the acidity or basicity of a solution.

In summary, the ionic-product of water, Kw, remains constant at 1.0 x 10⁻¹⁴ mol²/L² for any aqueous solution at 25°C. This constant is a result of the auto-ionization of water and helps to understand the relationship between hydronium and hydroxide ions in the context of acidity and basicity.

Learn more about ionic-product of water here: https://brainly.com/question/31640554

#SPJ11

First, remember that:

The vapor pressure of a liquid is directly related to the intermolecular forces present between its molecules. If these forces are stronger, the evaporation rate and the vapor pressure will be lower.

So, we're going to analyze the intermolecular forces of each element:

O2: The molecule of oxygen consist of two oxygen atoms bonded together by a double bond. It consist of just London dispersion forces, so this is a really weak force.

H2O: Water has hydrogen bonds, dipole-induced dipole forces, and London dispersion forces. So it has strong forces.

SO: It consists of London dispersion forces, and there's a difference of electronegativity between S and O, so there's a greater force than the force of O2.

Therefore, O2 could have the highest vapor pressure, as its intermolecular forces are the weakest.

Answer: III and IV

Pls mark me as brainiest

Answer:

a and c

Explanation:

a and c are the same

its a or c because if you have a litre of water in a jug or beaker it would read 1 litre so it would be the same with solid as you could have a litre or less worth of a solid depending on shape

Explanation:

When writing chemical equations for reversible reactions, the usual one-way arrow is not used. Instead, two arrows are used, each with just half an arrowhead - the top one pointing right, and the bottom one pointing left.

For example:

ammonium~chloride \rightleftharpoons ammonia + hydrogen~chloride

NH_{4}Cl(s) \rightleftharpoons NH_{3}(g) + HCl(g)

Without absolute value , for y=|x + 5| for  x <-5, y = -2x

If x < -5, then x + 5 < 0. Therefore, y = |x + 5| = -(x + 5).

y = -(x + 5)

Note that this equation is only valid when x < -5. For values of x greater than or equal to -5, the absolute value of (x + 5) becomes positive, and y = |x + 5| = x + 5. Therefore, the equation for the full domain of y = |x + 5| is:

y = -(x + 5) for x < -5

Therefore | x -5 | should be changed to 5 - x to get a positive value.

without absolute value , for x <-5, y = -2x

The term "absolute value" is not commonly used. However, there is a related concept called "absolute configuration." Absolute configuration refers to the spatial arrangement of atoms or groups of atoms around a chiral center in a molecule. A chiral center is a carbon atom that has four different groups attached to it.

The absolute configuration of a chiral center can be determined using the Cahn-Ingold-Prelog (CIP) rules, which assign priority to the four different groups based on their atomic numbers. By following these rules, we can determine whether the chiral center has an R or S configuration. Knowing the absolute configuration of a chiral center is important because it determines the molecule's biological activity and the way it interacts with other molecules in a chemical reaction.

To learn more about Absolute value visit here:

brainly.com/question/4691050

#SPJ4

Answer:

Potential energy is the stored energy in an object or thing, while kinetic energy is the energy which an object contains because of a particular motion.

Explanation:

Potential energy is energy that is stored for example a wind up toy, it has energy but in order for you to get kinetic energy, it has to move. So kinetic energy is moving energy.

The difference is that potential is stored and kinetic is moving energy.

Answer: Near the Protons. The electron structure of bromine is illustrated above. In chemical reactions, how does the valence configuration of Bromine tend to change? ... It loses one electron.

Explanation:

btw i found that on google lol

Answer:

Hydrogen | 4

Carbon | 2

Oxygen | 2

*

* check the spilling of the elemnts because i am not sure its correct *

We anticipate that the resulting aqueous solution will be basic.

Weak acids are those that do not dissociate completely in solution. A weak acid is defined as any acid that is not a strong acid. A weak acid's strength is determined by how much it dissociates; the more it dissociates, the stronger the acid.

A conjugate base is the base member, X-, of two compounds that transform into one another by gaining or losing a proton. In a chemical reaction, the conjugate base has the ability to gain or absorb a proton.

Calcium propionate [Ca(CH₃CH₂COO)₂

We know that Calcium propionate dissolves completely in water.

So,

Ca(CH\(_3\)CH\(_2\)+COO)\(_2\)→Ca\(^2^+\) +2CH\(_{3}\)CH\(_2\)COO−

Water can protonate the propionate anion. When everything is balanced,

CH\(_3\)CH\(_2\\\)COO−+H2O⇌CH\(_3\)CH\(_2\)COOH+OH−

We anticipate that the resulting aqueous solution will be basic.

To know more about Weak Acids and Conjugate Bases visit:

https://brainly.com/question/4483911

#SPJ4

The ejection fraction (EF) is calculated as the percentage of blood pumped out of the left ventricle during each heartbeat.

It is determined by the difference between the end-diastolic volume (EDV) and the end-systolic volume (ESV).

Given that the ejection fraction is 65% and the EDV is 160 ml, we can calculate the ESV using the following equation:

EF = (EDV - ESV) / EDV * 100

Rearranging the equation, we can solve for ESV:

ESV = EDV - (EF * EDV / 100)

Substituting the given values:

ESV = 160 - (65 * 160 / 100)

ESV = 160 - (104)

ESV = 56 ml

Therefore, the ESV is 56 ml (option b).

The pulse rate refers to the number of times the heart beats per minute (bpm). It can be calculated using the cardiac cycle duration, which is the time it takes for one complete heartbeat.

Given that the cardiac cycle is 0.92 seconds long, we can calculate the pulse rate (PR) in bpm using the following equation:

PR = 60 / (cardiac cycle duration in seconds)

Substituting the given value:

PR = 60 / 0.92

PR ≈ 65 bpm

Therefore, the pulse rate is approximately 65 bpm (option b).

To learn more about  ventricle

https://brainly.com/question/26387166

#SPJ11

Answer: Decreases

Explanation: Hope this helps :)

Answer:

B

Explanation:

it's the second one it's actually easy for me