the a of a monoprotic weak acid is 0.00724. what is the percent ionization of a 0.143 m solution of this acid?

We may utilize the water's bulk modulus, or about 2.2 GPa, to determine the pressure increase needed to lower the volume of liquid water by 3%. According to the formula, the pressure rises by around 6.6 x 107 Pa.

To calculate the pressure increase required to reduce the volume of liquid water by 3%, we can use the Bulk Modulus of water, which measures its resistance to compression.

The Bulk Modulus (K) relates the pressure change (∆P) to the fractional change in volume (∆V/V) and is given by the formula:

\(K = -\frac{\Delta P}{\frac{\Delta V}{V}}\)

In this case, we know that the fractional change in volume (∆V/V) is -0.03 (since the volume is reduced by 3%, which is equivalent to a negative change).

Let's assume the initial pressure is P₀, and we need to calculate the pressure increase (∆P) required.

Using the formula above, we can rearrange it to solve for ∆P:

\(\Delta P = -K \cdot \frac{\Delta V}{V}\)

For water, the Bulk Modulus is approximately 2.2 GPa (GigaPascals), which is equivalent to 2.2 x 10⁹ Pa.

Plugging in the values:

∆P = -(2.2 x 10⁹ Pa) * (-0.03)

∆P = 6.6 x 10⁷ Pa

Therefore, a pressure increase of approximately 6.6 x 10⁷ Pascal (Pa) must be applied to liquid water in order to reduce its volume by 3%.

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Answer:

B

Explanation:

the Answer is B .

The skeletal system produce blood cells , protect organs and helps the movement of the body .

We have been given the mass percentage of each element in the compound and its molar mass. To find the empirical formula of the compound, we need to follow the given steps:

Calculate the number of moles of each element using its mass percentage.

Calculate the simplest whole number ratio of the atoms using the number of moles. Divide each of the atoms' subscripts by the smallest number obtained in the previous step. Write the empirical formula of the compound. The given compound has 43.64% of Phosphorous (P) and 56.36% of Oxygen (O) by mass. Let's calculate the number of moles of each element.1. For Phosphorous (P):Mass percentage of P = 43.64%Atomic mass of P = 31 g/mol .Molar mass of the compound = 283.39 g/mol.

Number of moles of P in the compound= (43.64/100) * (283.39 g/mol) / (31 g/mol) = 3.996 moles2. For Oxygen (O):Mass percentage of O = 56.36%.

Atomic mass of O = 16 g/molMolar mass of the compound = 283.39 g/molNumber of moles of O in the compound = (56.36/100) * (283.39 g/mol) / (16 g/mol) = 11.994 molesNow, to find the simplest whole number ratio of the atoms, we can divide the above values by the smaller of the two, i.e., 3.996.3.996/3.996 = 1 for P11.994/3.996 = 3 for OTherefore, the empirical formula of the compound with 43.64% P and 56.36% O and a molar mass of 283.39 g/mol is P1O3.

From the given information, we have to calculate the empirical formula of a compound with 43.64% P and 56.36% O and a molar mass of 283.39 g/mol. We can calculate the empirical formula of a compound from its percentage composition or elemental composition, which is given to us.The empirical formula of a compound is the simplest whole number ratio of the atoms present in the compound.

To determine the empirical formula of a compound, we need the mass percentage of each element present in the compound and its molar mass. The molar mass of the compound is the sum of the atomic mass of all atoms present in it.To calculate the empirical formula of the compound, we will first calculate the number of moles of each element. The formula for calculating the number of moles is:

Number of moles = Mass / Molar mass.

Once we know the number of moles of each element, we can find the simplest whole number ratio of atoms present in the compound. To find the simplest whole number ratio, we will divide the number of moles of each element by the smallest number of moles among the elements.The smallest number of moles is 3.996, which is the number of moles of P. We can calculate the number of moles of O by the same formula. By dividing 11.994/3.996, we get 3. Therefore, the empirical formula of the compound is P1O3.The empirical formula of the compound with 43.64% P and 56.36% O and a molar mass of 283.39 g/mol is P1O3.

The empirical formula of the compound with 43.64% P and 56.36% O and a molar mass of 283.39 g/mol is P1O3. We can calculate the empirical formula of a compound by knowing the mass percentage of each element in the compound and its molar mass. The empirical formula of a compound is the simplest whole number ratio of atoms present in the compound.

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\(Question\)

Is food digested in the stomach a chemical change

Answer:

Yes Food Digested in the stomach a Chemical Change! :D

Food digestion is considered a chemical change because enzymes in the stomach and intestines break down large macromolecules into simpler molecules so that the body can more easily absorb the food.

Hope this helps!!

\(xXxAnimexXx\)

Answer:

Yes it is a chemical change

Explanation:

Because macromolecules are broken down into simpler smaller substances by enzymes in the stomach and this also has a chemical reaction

The lower vapor pressure results in a depressed freezing point. As a result, the graph shifts, and the triple point is lowered resulting in a lower melting point.

The boiling factor of a substance is the temperature at which the vapor stress of a liquid equals the stress surrounding the liquid and the liquid modifications right into a vapor. the warmth of vaporization is the energy required to convert a given amount (a mol, kg, pound, and so on.) of a substance from a liquid right into gasoline at a given pressure (frequently atmospheric stress).

The boiling point of a liquid varies consistent with the carried-out strain; the normal boiling point is the temperature at which the vapor stress is equal to the same old sea-stage atmospheric pressure (760 mm [29.92 inches] of mercury). At sea level, water boils at 100° C (212° F). The boiling factor of a natural substance is the temperature at which the substance transitions from a liquid to the gaseous phase.

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Answer:

When light waves strike a medium and are neither reflected or refracted, nor are they allowed to pass through.

Explanation:

Answer: A chemical reaction that stores energy is called an endothermic reaction. More energy might be released as products form than the energy needed to break the reactants apart.

Explanation:

Chemical reaction that involves the storing of energy is Endothermic reaction.

Therefore, energy can be stored in the bonds.

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Answer:

Hi! It's B - globular cluster

Answer:

B Globular Cluster

Explanation:

Sorry if I am wrong :)

Moles are the unit of measurement that estimates the amount of the substance in a sample. It directly compares the amounts of substances. Thus, option c is correct.

Moles are said to be the SI unit to estimate the number of substances like atoms, molecules, ions, etc., in a sample. It is used to measure the elementary entities that are small in size.

It is abbreviated as mol and is equivalent to 6.02214076 × 10²³ particles (Avogadro number). It can be calculated by mass and the molar mass of the substance and is shown as,

Moles (n) = mass ÷ molar mass

Where mass is given in grams and molar mass in grams/ mol.

The moles are used to estimate the molarity and are also used in the ideal gas equation. The moles will be more in the substance with less molar mass and vice versa.

Therefore, option c. moles directly compares the amounts of substances.

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Answer: 8

Explanation:

Answer:

I think the answer is 4 or 3, it could be 2 as well, I'm not sure.

Explanation:

Answer:

Elements?

Explanation:

Im not sure but I think its elements because carbon dioxide is, and the others sound like it too

Answer: Because most electrical wires have an outer coating so you don't get electrocuted when you touch them. You could ask why don't you get electrocuted when you touch a phone charger, same answer, same outer coating.

Answer:

The copper in electrical wires is a great conductor, and birds are not great conductors. So the energy will just bypass the birds and keeps moving along the wire.

Explanation:

Answer:

1 calcium, 2 chlorine

Explanation:

calcium has a +2 charge, chlorine has -1 so you would need 2 of them

Answer:

Because the scientific knowledge itself helps solve many basic human needs and it also improves how humans live and their standards. For example, without science medications wouldn´t exist and many technological devices we use now-a-days. We´re surrounded by science, we just don´t really notice it.

Reason Why:  Let's replace the data given in the formula of Ideal Gases Law.P. V = n . R . T

3L . 1000kPa = n . 8.31 L.kPa/mol.K . 298K

(3L . 1000 kPa) / ( 8.31 L.kPa/mol.K . 298K) = n

1.21 moles

PLEASE FOLLOW AND MARK BRAINLIEST :D

Since a pH of 3 is three numbers higher than a pH of 6, we can find the change in acidity by taking 10 to the third power. The solution with a pH of 3 is 1000 times more acidic than the solution with a pH of 6.

Answer:

1.3 atm

Explanation:

To solve this problem, we can use the combined gas law, which relates the pressure, volume, and temperature of a gas:

(P1 x V1) / (T1) = (P2 x V2) / (T2)

where P1, V1, and T1 are the initial pressure, volume, and temperature of the gas, and P2, V2, and T2 are the final pressure, volume, and temperature of the gas.

We are given:

P1 is what we want to find

V1 = 839 mL

T1 = 45 degrees Celsius = 318 K

V2 = 1032 mL

T2 = 58 degrees Celsius = 331 K

P2 = 1.9 atm

Plugging these values into the formula, we get:

(P1 x 839 mL) / (318 K) = (1.9 atm x 1032 mL) / (331 K)

Simplifying and solving for P1, we get:

P1 = (1.9 atm x 1032 mL x 318 K) / (839 mL x 331 K)

P1 = 1.3 atm (rounded to one decimal place)

Therefore, the original pressure of the oxygen sample was 1.3 atm.

There are three base units in the code for one amino acid.

What are the 3 bases that code for an amino acid?

Codons are made up of any triplet combination of the four nitrogenous bases adenine (A), guanine (G), cytosine (C), or uracil (U). Of the 64 possible codon sequences, 61 specify the 20 amino acids that makeup proteins and three are stop signals.

What is the 3 base code?

A three-base sequence in DNA or RNA is known as a codon. The codes in the coding strand of DNA and in messenger RNA aren't, of course, identical, because in RNA the base uracil (U) is used instead of thymine (T).

Why do codons have 3 bases?

The more bases there are per codon the more information you can code for. There are only 22 different amino acids, in consequence, we need a minimum of 3 bases per codon.

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An ideal gas does not apply since the volume occupied by the molecules is so little in comparison to the container volume.

If there are no intermolecular attractive forces and all collisions between atoms or molecules are entirely elastic, then a substance is said to be an ideal gas. It can be pictured as a collection of perfectly hard spheres that collide but do not otherwise interact.

Ideal gases' internal enthalpy and energy rely only on temperature, not on volume or pressure. These characteristics of ideal gases can be demonstrated using property relations.

Calculating the volume of gases created or consumed can be done using the ideal gas law. Chemical equations typically translate between volumes and molar quantities using the ideal-gas equation.

The molecules of the gas take up volume because they spread out over a broad area of space, whereas the molecules of an ideal gas are modelled as point particles with no volume on their own.

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Milk

Explanation:

because milk is very thick youknow here I go

The concentration terms are molality, normality and mole fraction and percent by volume. Therefore, the proof of the ethanol in the solution is the percent by volume that is 45.4%.

The percent by volume formula calculates the concentration of the solution by using the volume of the solute (the dissolved content in the solvent) and the volume of the solution. It is represented as (v/v%).

Mathematically,

percent by volume=(volume of solute÷ volume of solution)×100

Volume of solute=56.2 ml

volume of solution=123.6 ml

Substituting all the given values in the given formula, we get

percent by volume=(56.2 ÷ 123.6)×100

                              =45.4%

Therefore, the proof of the ethanol in the solution is the percent by volume that is 45.4%.

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Answer: orbitals supernumerary

Explanation:

Answer:

both S orbital and p orbitals

Explanation:

took the exam got the question right.

Answer: topper is a  app that gives all answer..cheak in that

Explanation:

hope you help

The soda water didn't freeze because of the depression in freezing point as compared to the water.

When a solute is added to a pure solvent , then the value of freezing point is reduced.

The decrease in the freezing point is directly proportional to the molality of the solute.

It is given in the question that

A student put a bottle of water and a can of sugared soda in the freezer to chill them quickly.

when she took them out, the bottle of water was frozen but the can of soda was not.

It is because water is the pure solvent , so freezing point is fixed but the soda water has sugar and Carbon Di oxide along with the solvent water , the presence of the sugar and Carbon -di-oxide decreases the freezing point of the soda water and so it doesn't freezes.

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1: Medical imaging

2: Antibiotics

3: Compass

4: Microscope

I hope this helps! :)

Answer:

plz give my brainliest

Explanation:

1 – Antibiotics

Antibiotics revolutionised medicine in the twentieth century, and together with vaccinations, have almost completely eradicated many once-common diseases such as tuberculosis. While the use of mould to treat infections was first noted by ancient civilisations such as the Egyptians and the Greeks, it was Sir Alexander Fleming who discovered the first antibiotic substance, Penicillin G. For the millions of lives that antibiotics have, and continue to, save worldwide, antibiotics have to be in my scientific top five.

2 – DNA

Over the last 60 years, our rapidly evolving understanding of DNA has catapulted medical knowledge and treatments and even transformed the way we solve crimes. Since James Watson and Francis Crick’s discovery of the double helix structure of DNA in 1953, the scientific community has split in many different directions to investigate the building blocks of life to understand what makes us who we are. Without the discovery of DNA, we wouldn’t have all the ground-breaking studies going on right now in genome mapping and sequencing, so for that reason, DNA has to be my number one scientific discovery of all time.

3-The idea of an atom-

The idea of atoms stretches back to ancient Greece when the philosopher Democritus declared that all matter is made of tiny particles. The philosopher Plato even decided-- wrongly-- that different substances had different shaped atoms, like pyramids or cubes. The first modern evidence for atoms appears in the early 1800s when British chemist John Dalton discovered that chemicals always contain whole number ratios of atoms.

4 – Medical imaging

Medical imaging is an essential tool for clinical analysis, allowing doctors to see beyond what is hidden by skin and bone to accurately diagnose and treat diseases. From X-rays and radiography to MRI scans and ultrasound technology, these scientific innovations have all helped to ensure modern medicine is the least invasive it can be while ensuring the best outcomes for patients. Medical imaging really showcases how science and technology are complementary disciplines, as one advances the other. Marie Curie played a vital role in discovering radioactive elements to do radioactive scans