Which of the following parts does not carry blood throughout the body?
a.
Heart
b.
Capillaries
c.
Arteries
d.
Veins

Answer:

Melting point

Explanation:

Melting point is a intensive property and Intensive properties can be used to help identify a sample because these characteristics do not depend on the amount of sample, nor do they change according to conditions.

IF IT WAS HELPFUL HIT THE CROWN

Answer:

Explanation:

Yes melting point!

Among the three companies, Company A has the highest acid-test ratio (2.67), followed by Company B (2.00), and then Company C (1.75). The higher the acid-test ratio, the better the company's ability to meet short-term obligations without relying on inventory sales. Therefore, Company A is in the best position to meet short-term obligations.

To compute the acid-test ratio (also known as the quick ratio) for each company, we'll use the formula:

Acid-Test Ratio = (Current Assets - Inventory) / Current Liabilities

a. Compute the acid-test ratio for each company:

Company A:

Current Assets = $250,000

Inventory = $50,000

Current Liabilities = $75,000

Acid-Test Ratio for Company A = ($250,000 - $50,000) / $75,000

Acid-Test Ratio for Company A = $200,000 / $75,000

Acid-Test Ratio for Company A ≈ 2.67

Company B:

Current Assets = $150,000

Inventory = $30,000

Current Liabilities = $60,000

Acid-Test Ratio for Company B = ($150,000 - $30,000) / $60,000

Acid-Test Ratio for Company B = $120,000 / $60,000

Acid-Test Ratio for Company B = 2.00

Company C:

Current Assets = $300,000

Inventory = $90,000

Current Liabilities = $120,000

Acid-Test Ratio for Company C = ($300,000 - $90,000) / $120,000

Acid-Test Ratio for Company C = $210,000 / $120,000

Acid-Test Ratio for Company C = 1.75

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Elements from place theory and geoheritage can be used in the conservation of a natural resource. Place theory emphasizes the cultural and emotional connections between people and places, while geoheritage focuses on the geological and ecological values of an area. Incorporating these elements in conservation efforts can help raise awareness, foster a sense of belonging, and highlight the intrinsic value of the natural resource, leading to better stewardship and preservation.

Place theory recognizes that people develop a connection with specific places due to their cultural significance, history, and personal experiences. By incorporating place-based approaches in the conservation of a natural resource, such as highlighting the cultural and historical importance of the area, it can foster a sense of attachment and pride among local communities. This can lead to increased support and engagement in conservation initiatives.

Geoheritage, on the other hand, focuses on the geological and ecological values of a specific area. Understanding the geological processes, unique landforms, biodiversity, and ecological significance of a natural resource can provide a strong scientific foundation for its conservation. By emphasizing the geoheritage values, such as rare geological formations or endangered species habitats, conservation efforts can be targeted towards preserving these specific features.

By combining elements from place theory and geoheritage, conservation efforts can encompass both the cultural and scientific aspects of a natural resource. This holistic approach not only enhances the understanding and appreciation of the resource but also promotes sustainable management practices for its long-term conservation.

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Answer:

Knetic

Explanation:

When you jump on a trampoline, your body has kinetic energy that changes over time. As you jump up and down, your kinetic energy increases and decreases with your velocity. Your kinetic energy is greatest, just before you hit the trampoline on the way down and when you leave the trampoline surface on the way up.

Answer: atmospheric pressure

Explanation:

i hope it helps :)

Answer:

The answer B: decreases as altitude decreases

Hope this helps

Answer:

In the attached image.

Explanation:

DNA to MRNA Thymine get's changed to Uracil. The bases match as:

A- U

U- A

G- C

C- G

Your amino acid is coded from the mRNA

We can use the formula for heat released:

Q = mcΔT

where Q is the heat released, m is the mass of the sample, c is the specific heat of the material, and ΔT is the change in temperature.

Plugging in the given values, we have:

113.8 J = m(0.240 J/g°C)(-45.0°C)

Simplifying:

m = 113.8 J / (0.240 J/g°C * -45.0°C)

m = 106.5 g

Therefore, the mass of the silver sample is 106.5 g.

1) List the known quantities.

Sample:

Elements:

Silver: Ag.

Nitrogen: N.

Oxygen: three O.

The compound above has silver, nitrogen, and oxygen.

silver, nitrogen, oxygen.

the Lewis dot diagram for lithium is

Answer:

0.136mol

Explanation:

Using the general gas law equation as follows:

PV = nRT

Where;

P = pressure (atm)

V = volume (Litres)

n = number of moles (mol)

R = gas constant (0.0821 Latm/mol K)

T = temperature (K)

K = °C + 273

K = 50°C + 273

K = 323K

According to this question, P = 3.6atm, T = 323K, V = 1.00L, R = 0.0821 Latm/mol K, n = ?

3.6 × 1 = n × 0.0821 × 323

3.6 = 26.52n

n = 3.6/25.52

n = 0.1357

n = 0.136mol

The best material for insulation in this case would be Styrofoam. Styrofoam is lightweight, strong, and an excellent thermal insulator. It is composed of tiny bubbles of air that are suspended in a matrix of plastic. The air trapped inside the bubbles acts as a thermal barrier, keeping heat out or in, depending on the application.

Its lightweight nature makes it easier to manipulate, while its strength gives it the durability needed to keep a drink hot or cold. Its insulation properties also make it the perfect material for the student's insulated drink cup.

Styrofoam can be cut and shaped easily, making it a great material for use in drink cups. The material is also easy to clean and resistant to water and other liquids, which makes it ideal for frequent use. Additionally, Styrofoam is both affordable and widely available, making it an ideal choice for the student's project.

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Answer:

(NH4)2SO4

Explanation:

2NH3(aq) + H2SO4 (aq) ---> (NH4)2SO4(aq)

Ammonia reacts with sulfuric acid to give the fertilizer ammonium sulfate.

Answer:

57.0kJ/mol is ΔH of the reaction

Explanation:

The reaction is:

1/2 Ba(OH)₂ + HCl → 1/2 BaCl₂ + H₂O + ΔH.

Where  ΔH is the heat of reaction per mole of water.

Moles of water produced are equal to moles of HCl that are:

70.0mL = 0.070L * (0.640mol / L) = 0.0448moles HCl = Moles of water produced.

Now, heat produced is determined using coffee-cup calorimeter equation:

Q = m×ΔT×C

Where Q is heat released

m is mass of solution (70mL + 70mL = 140mL = 140g -Density of 1g/mL-)

ΔT is change in temperature (27.36°C - 23.00°C = 4.36°C)

And C is specific heat of the solution (4.184J/gK)

Replacing:

Q = 140g×4.36°C×4.184J/gK

Q = 2553.9J

This is the heat released when 0.0448 moles of water are produced, that means ΔH is:

2553.9J / 0.0448moles

ΔH = 57000J/mol =

Answer:

+3

Explanation:

Let's consider the chemical formula XN. It must be formed by a cation coming from X and an anion coming from N. Nitrogen has only one negative charge: -3. We know, that the sum of the charges of the elements that form a compound is equal to the charge of the compound. considering XN is a neutral compound (charge 0), we can use this information to calculate the charge of X.

X + N = 0

X + (-3) = 0

X = +3

(2R,3R,4S)-2,3,4-trichloroheptane and (2S,3S,4R)-2,3,4-trichloroheptane are diastereomers.

Diastereomers can be defined as stereoisomers that are not mirror images of each other. Therefore, option D (diastereomers) is the correct answer. Enantiomers are stereoisomers that are non-superimposable mirror images of each other. Constitutional isomers are molecules that have the same molecular formula but different connections between their atoms, while not isomers are molecules that have the same chemical formula but differ in their three-dimensional arrangement.

Diastereomers are stereoisomers with two or more stereocenters, and they vary in configuration at some stereocenters while retaining others. When molecules have more than one chiral center, there are many ways to combine them, and the resulting isomers can be either diastereomers or enantiomers.

In this case, both compounds have four chiral centers, but they differ in the configuration of only one of the chiral centers, making them diastereomers.

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This last electron is called the differentiate electron because it distinguishes an atom from the one straight away preceding it in the periodic table.

Evaluate an electron configuration, and divide the periodic table into sections to act for the atomic orbitals, the regions where electrons are held. Groups one and two are the s-block, three through 12 represent the d-block, 13 to 18 are the p-block, and the two rows in the middle are the f-block. The electron configuration of an atom is written with the help of subshell labels. These labels contain the shell integer (given by the principal quantum number), the subshell name (given by the azimuthal quantum number), and the total number of electrons in the subshell in superscript.

So we can conclude that Electron configurations are the synopsis of where the electrons are around a nucleus. As we learned earlier, each neutral atom has a number of electrons

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Answer:

the charge of an element is equal to the number of orotons minus the number of electrons. the number if proton is equal to the number of elements given in the periodic table. the number of electrons is equal to the atomic numver minus the CHARGE of the atom

Answer:

Characteristics outlined below

Explanation:

Anthropods, though they generally possess exoskeleton, segmented bodies and joint appendages, are divided into four (4) groups:

Answer:350 mmHg

Explanation:

use Dalton’s law:

P Total = P gas 1 + P gas 2 + P gas 3

825= P1+ 350+ 125

350+125=475

825-475= 350

P1= 350 mmHg

Answer: The mass of a 9.0 cm3 cube of lead is 102.6 g

If you multiply volume with the given density you will get the mass of the lead

here,

The given volume is 9.0 cm3 and the density is 11.4g/cm3

the mass will be (9.0*11.4)g = 102.6 g

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Answer:

pH is a measure of how acidic/basic water is. The range goes from 0 - 14, with 7 being neutral. pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base.

Answer:

Hey mate here's your answer ⤵️

a mark or character used as a conventional representation of an object, function, or process, e.g. the letter or letters standing for a chemical element or a character in musical notation.

noun: letter, character, sign of written communication

Something used for or regarded as representing something else; a material object representing something,

or a character of some kind

Example:

Often something immaterial; emblem, token, or sign: "$"<< the dollar sign is a symbol used to show / means money

Hope this kinda helped

Answer:

A

Explanation:

A catalyst speeds up a reaction by lowering the required activation energy, so it's not B. Like previously stated, the catalyst lowers the activation energy required, so it's not C either. This leaves us with A. Just to double check, does a catalyst speeds up a reaction? Yes! So like it says in A, a catalyst causes the equilibrium to be reached faster. Have a nice day! :)

Catalysts speed up a chemical reaction by causing equilibrium to reach quickly while maintaining the equilibrium's position. Thus, option A is true.

A catalyst increases the reaction rate by decreasing the activation energy of the reaction. As the minimum energy required by the reactants for the reaction is decreased the rate of the formation of products increases.

During the reaction, the catalyst remains unchanged and does not undergo any chemical change. It can increase the reaction rate of both irreversible and reversible reactions.

In an equilibrium reaction, the catalyst can increase the rate of both forward and reverse reaction by reaching the reaction equilibrium at a faster rate and can move the reaction toward the products as well as a reactant.

Therefore, the catalyst causes equilibrium to be reached faster.

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Answer:

nitrogen in atmospheres of a sample is 0.679

It will take around 66.43 hours for 2200 grams of the radioactive substance to decay to 75 grams with a half-life of 14 hours.

The half-life formula of a radioactive substance is expressed as:

Final amount = Initial amount × (1/2)^(time/half-life)

Where, Initial amount = 2200 grams

Final amount = 75 grams

Half-life = 14 hours.

Now, putting these values in the formula,\(75 = 2200 × (1/2)^(time/14)Or, (1/2)^(time/14) = 75/2200.\)

We can write 75/2200 as 3/88 and take the log of both sides to solve for t.

The resulting equation will be:

-log2(time/14) = log2(3/88)t = -14 × log2(3/88) / log2(1/2)t = 66.43.

Therefore, it will take approximately 66.43 hours for 2200 grams of the substance to decay to 75 grams.

The half-life formula of a radioactive substance is expressed as:

Final amount = Initial amount × (1/2)^(time/half-life)

Where, Initial amount = 2200 gramsFinal amount = 75 grams.

Half-life = 14 hours Now, putting these values in the formula,\(75 = 2200 × (1/2)^(time/14)Or, (1/2)^(time/14) = 75/2200.\)

We can write 75/2200 as 3/88 and take the log of both sides to solve for t.

The resulting equation will be:-\(log2(time/14) = log2(3/88)t = -14 × log2(3/88) / log2(1/2)t = 66.43.\)

Therefore, it will take approximately 66.43 hours for 2200 grams of the substance to decay to 75 grams.

It will take around 66.43 hours for 2200 grams of the radioactive substance to decay to 75 grams with a half-life of 14 hours.

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The half-life of a radioactive substance refers to the time it takes for half of the substance to decay or transform into another element. In this case, the half-life of the radioactive substance is given as 14 hours.

To find out how many hours it will take for 2200 grams of the substance to decay to 75 grams, we can use the concept of half-life.

First, let's calculate the number of half-lives it will take for the substance to decay from 2200 grams to 75 grams.

Starting with 2200 grams, after one half-life (14 hours), half of the substance will decay, leaving us with 1100 grams. After two half-lives (28 hours), half of the remaining substance will decay, leaving us with 550 grams. Continuing this pattern, we can calculate the number of half-lives it will take to reach 75 grams.

To do this, we can use the formula:

Final amount = Initial amount * (1/2)^(number of half-lives)

Let's substitute the values:

75 grams = 2200 grams * (1/2)^(number of half-lives)

Now, let's solve for the number of half-lives:

(1/2)^(number of half-lives) = 75 grams / 2200 grams

To isolate the exponent, we can take the logarithm (base 1/2) of both sides:

log base (1/2) of (1/2)^(number of half-lives) = log base (1/2) of (75 grams / 2200 grams)

This simplifies to:

number of half-lives = log base (1/2) of (75 grams / 2200 grams)

Using a calculator, we can find that the number of half-lives is approximately 4.446.

Now, to find the total time it will take for 2200 grams to decay to 75 grams, we can multiply the number of half-lives by the length of one half-life (14 hours).

Total time = number of half-lives * length of one half-life

Total time = 4.446 * 14 hours

Total time ≈ 62.24 hours

Therefore, it will take approximately 62.24 hours for 2200 grams of the radioactive substance to decay to 75 grams.

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The acid having the yellow anion is a weak acid.

The weak acid is the acid that does not dissociate completely in solution. Strong acids are known to dissociate completely in solution. Hence, their cations and anions do not occur together in solution.

Weak acids acids do not dissociate in solution hence, we can still spot the cations connected to their anions in solution. Hence, the acid having the yellow anion is a weak acid.

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Answer:

0.5%m/V y 0.0352M.

Explanation:

El %m/V se define como la masa de soluto (Na2SO4 en este caso) en 100mL de solución.

La molaridad de esta solución son las moles de Na2SO4 por litro de solución

La solución original se diluye de 50.0mL a 0.800L = 800mL. Esto es una dilución de:

800mL / 50.0mL = 16 veces

Como la concentración original es de 8.0%m/V, la de la dilución será:

8.0%m/V / 16 = 0.5%m/V

Esto significa que en 100mL = 0.1L hay 0.5g. Para hallar la molaridad debemos convertir estos 0.5g a moles con la masa molar del Na2SO4 = 142.04g/mol:

0.5g * (1mol / 142.04g) = 0.00352 moles Na2SO4 en 0.1L:

0.00352 moles / 0.1L =

0.0352M

Answer:

16

Explanation:

2 per molecule X 8 molecules in total

The Celsius temperature on the beach is approximately 35.8 degrees Celsius.

The pressure-temperature relationship is governed by Charles' Law, which states that as long as pressure is constant, the volume of a gas will be directly proportional to its temperature.The equation used to determine the relationship between temperature and pressure is as follows: PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the universal gas constant, and T is the temperature in Kelvin (K).Let's utilize the formula given above to find the temperature of the beach:P1V1/T1 = P2V2/T2We can substitute the values we've been provided to solve for T2 : When the can is at 16 degrees Celsius and 4.5 atm, the pressure is:P1 = 4.5 atmT1 = 16°C + 273 = 289 KV1 and V2, which are the same, can be omitted. P2 = 4.81 atm Substituting these values in the equation : P1V1/T1 = P2V2/T2V1 and V2 are equal and can be eliminated. We can also change the temperature to Kelvin, so:T2 = (P2 * T1 * V1) / (P1 * V2)T2 = (4.81 atm * 289 K) / 4.5 atmT2 = 308.8 KSubtract 273 to convert back to Celsius : T2 = 308.8 K - 273 K = 35.8 degrees Celsius.

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The volume of 0.162 mna3po4 solution is necessary to completely react with 91.4 ml of 0.104 m cacl2 is  0.137 L

To determine the volume of 0.162 M Na3PO4 solution that is necessary to completely react with 91.4 mL of 0.104 M CaCl2, you can use the concept of stoichiometry..

The chemical reaction between Na3PO4 and CaCl2 can be represented by the following balanced chemical equation:

3 Na3PO4 + 2 CaCl2 -> Ca3(PO4)2 + 6 NaCl

First, you need to convert the volumes of the solutions to moles using the molarities and the volume/molarity formula:

moles Na3PO4 = (0.162 M) * (91.4 mL / 1000 mL/L) = 0.0150 moles

moles CaCl2 = (0.104 M) * (91.4 mL / 1000 mL/L) = 0.0095 moles

Next, use the molar ratios in the balanced chemical equation to determine the volume of Na3PO4 solution that is necessary to react with 0.0095 moles of CaCl2:

(Volume Na3PO4 / 3) = (Volume CaCl2 / 2)

Solving for the volume of Na3PO4, you get:

Volume Na3PO4 = (3 / 2) * (Volume CaCl2)

Plugging in the values, you get:

Volume Na3PO4 = (3 / 2) * (91.4 mL / 1000 mL/L)

Solving, you get:

Volume Na3PO4 = 0.137 L

Therefore, the volume of 0.162 M Na3PO4 solution that is necessary to completely react with 91.4 mL of 0.104 M CaCl2 is approximately 0.137 L.

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