Processes in the human body are often complex and can be difficult to represent with a physical model. evaluate the model that sammi design by thinking about how her model compares to the actual interaction of the digestive and circulatory system.
then, short the sentences according to the whether they are strengths or weaknesses for her model. not all sentences will be used

Answer:

not used as sample holders because --> are opaque and absorb ir radiation

Explanation:

glass/quartz would absorb the IR radiation and mask the absorbtion of your sample.

IR sample holders must be made out of transparent materials. The glass, quartz, and plastics are not used as IR sample holders.

Glass may travel entirely through transparent materials without any light bouncing back. Comparatively, translucent materials permit some light to pass through while also reflecting some light off their surface. All light is reflected off the surface of opaque materials.

Glass, Quartz, and plastics are not used as IR sample holders because they are opaque to IR radiation and would absorb in the IR spectrum and mask the absorption of the sample.

IR sample holders must be made out of transparent materials.

Therefore, glass, quartz, and plastics are not used as IR sample holders.

To learn more about transparent materials, refer to:

https://brainly.com/question/1594864

#SPJ2

Answer:

product

Explanation:

It is the right answer.

C = m V . The unit of concentration is typically given as g/mL because the solute mass is frequently given in grammes and the volume is frequently given in milliliters. However, there are a tone of other mass and volume unit combinations that are possible.

Given that a solution consists of both a solute and a solvent, its total volume is equal to the sum of the volumes of both the solute and the solvent it contains.

A solution's concentration is an indicator of how much solute has dissolved in a specific volume of solvent or solution. When there is a significant amount of dissolved solute in a solution, it is said to be concentrated. When a dissolved solute is present in a solution, it is said to be diluted.

To know more about solvent visit:

https://brainly.com/question/1122671

#SPJ4

Whole blood is a complex fluid that circulates throughout the body. It is composed of various components, including red blood cells, white blood cells, platelets, and plasma. It has a temperature of approximately 38 degrees Celsius, a pH of 7.4, and a built-in system for clotting.

Whole blood is a complex fluid that contains a variety of cells and proteins necessary for the body's function. The temperature of whole blood is typically maintained at approximately 38 degrees Celsius, which is essential for maintaining proper enzymatic activity and cellular metabolism.

The pH of whole blood is regulated to maintain a slightly basic environment, typically around 7.4. This is crucial for the proper functioning of enzymes, metabolic processes, and cell signaling pathways.

Whole blood also contains a built-in system for clotting, which is essential for preventing excessive bleeding following an injury. This system involves a cascade of enzymatic reactions that ultimately lead to the formation of a blood clot, which helps to prevent further blood loss and promote healing. Overall, the various characteristics of whole blood are essential for maintaining the body's homeostasis and ensuring proper functioning.

Visit here to learn more about metabolism:

brainly.com/question/461228

#SPJ11

Answer:

Density = (3.33kg or g)/cm³(since you didn't state the unit of the mass)

Explanation:

volume = length × breath × height

let's take it as,

length = 2.0cm

breath = 3.0 cm

height = 2.0 cm

mass = 40 kg or g (since you didn't state the unit of the mass)

volume = ?

volume = length × breath × height

volume = (2 × 3 × 2)cm

volume = 12 cm³

Density = mass /volume

40kg or g/12cm³

Density = (3.33kg or g)/cm³(since you didn't state the unit of the mass)

Answer:

A. The birthrate is higher than the death rate

Explanation:

With an amide, the electron pair is delocalized onto the carbonyl group by resonance.

This resonance stabilization makes the amide much less basic than an alkylamine.

This means that the double bond character of the carbonyl group is partially transferred onto the nitrogen atom, resulting in a partially double bond character between the nitrogen and carbon atoms. This resonance stabilization makes the amide much less basic than an alkylamine, which does not have this electron delocalization.

The nitrogen atom in an amide is less likely to donate a lone pair of electrons to form a new bond, as these electrons are involved in the resonance stabilization.

As a result, amides are less reactive towards acids or electrophiles than alkylamines.

In summary, the delocalization of the electron pair onto the carbonyl group by resonance in an amide makes it less basic and less reactive than an alkylamine.

In an amide, the electron pair (lone pair) on the nitrogen atom (1) is delocalized onto the carbonyl group's oxygen atom (2) by resonance. This delocalization process spreads the electron density across multiple atoms, making the amide nitrogen (3) much less nucleophilic and basic (4) than an alkylamine.

The decreased nucleophilicity and basicity result from the electron pair's involvement in resonance stabilization, reducing its availability for interaction with other molecules or ions.

To know more about electron delocalization: brainly.com/question/28039656

#SPJ11

hope this is correct

Answer:

D

Explanation:

Iron is the fourth most abundant element, by mass, in the Earth's crust. The core of the Earth is thought to be largely composed of iron with nickel and sulfur. The most common iron-containing ore is haematite, but iron is found widely distributed in other minerals such as magnetite and taconite.

Answer:

Silk! All the others were inventions of the Han period.

Explanation:

Silk fabric was invented in Ancient China. Legend has it that the process for making silk cloth was first invented by the wife of the Yellow Emperor, Leizu, around the year 2696 BC.

- profparis

Answer:

9.03 x 10²³atoms

Explanation:

Given parameters:

Number of moles of CO₂  = 1.5mol

Unknown:

Number of atoms  = ?

Solution:

In a mole of a substance, we have the Avogadro's number of particles which is 6.02 x 10²³atoms.

  Using this number, we can determine the amount of atoms in any substance.

If;

       1 mole of CO₂ contains 6.02 x 10²³ atoms;

     1.5mole of CO₂ will contain 1.5 x 6.02 x 10²³ atoms

                                                = 9.03 x 10²³atoms

Answer:

Whether a solution is acidic or basic can be measured on the pH scale. When universal indicator is added to a solution, the color change can indicate the approximate pH of the solution. Acids cause universal indicator solution to change from green toward red. ... Acidic solutions have a pH below 7 on the pH scale.

Explanation:

Please Mark me brainliest

Answer:

Moving water

Explanation:

Answer:

moving water is the answer

Explanation:

:)

The moles allow us to associate the microscopic scale of atoms to the macroscopic one to be able to make calculations of mass. The weight of a mole will depend on the element so it does not always weigh the same.

One mole will always represent 6.022x10^23 atoms according to Avogadro's number so the correct answer will be:

b. Because it always counts the same number of items

Answer:

i believe Paleolithic, also called the Old Stone Age

Explanation:

25 drops of acid is required to neutralize the 50.0 ml of 0.010m of NaOH in the experiment.

The equation of the reaction is;

NaOH(aq) + HCl(aq) ---------> NaCl(aq) + H2O(l)

We can use the titration formula;

CAVA/CBVB = NA/NB

CA= concentration of acid

VA = volume of acid

CB = concentration of base

VB = volume of base

NA = number of moles of acid

NB = number of moles of base

CB = 0.010 M

VB = 50.0 ml

CA = 0.50 M

VA = ?

NA = 1

NB = 1

Substituting values;

CAVANB = CBVBNA

VA =  0.010 ×  50.0 × 1/ 0.50 × 1

VA = 1 ml

Since the total volume of acid used is 1 ml and each drop contains 0.040 ml

The number of drops required is 1ml/0.040 ml = 25 drops

Learn more: https://brainly.com/question/1527403

i believe this would be the answer

Arsenic trioxide.

Chlorine.

Hydrogen cyanide.

Nitrous oxide.

Phosgene.

Potassium cyanide (analytical reagent and purified)

Sodium arsenate (analytical reagent)

Sodium cyanide (analytical reagent)  

Hope this helps! :)

Answer:

1) Sarin gas

2) Potassium cyanide

3) Botulinum toxin

4) Batrachotoxin

5) Dimethyl Cadmium

6) Fluoroantimonic Acid

7) Arsine

8) Ricin

9) Strychnine

10) Nicotine

Explanation: That's it mate.

hope it helps

Molar concentration of Sodium chloride (NaCl) means the number of moles of sodium chloride present in 1L of water.

Molar mass of NaCl = Molar mass of Na + Molar mass of Cl

Molar mass of NaCl = 23 + 35.5

Molar mass of NaCl = 58.5g

∴ 1L of water contains 55.55 moles of water. Hence,

Mass of ocean water = 55.55 × 18 = 999.9g

Since, 1L of ocean water has a mass of 999.9g of which 3.5% is the salt.

hence, (999.9) (0.035) = 34.99g

So, No. of moles of NaCl = Mass of NaCl / 58g NaCl per mol

No. of moles of NaCl = 34.99/58.5

No. of moles of NaCl = 0.59 moles

So, Molar concentration or Molarity would be 0.59 moles present in 1L of solution.

Hence, Molarity or Molar Concentration = Moles of NaCl/ Volume of solution (in L)

Molarity = 0.59/1L

⇒ Molarity = 0.59M

Hence, the molarity is 0.59M

Learn more about Molarity here, https://brainly.com/question/8732513

#SPJ1

A major source of iodide in the North American diet is iodized salt. Iodized salt is regular table salt that has been fortified with iodine. The addition of iodine to salt was implemented as a public health measure to prevent iodine deficiency, which can lead to thyroid problems and other health issues.

Iodine is an essential nutrient required for the production of thyroid hormones. Since the body cannot produce iodine on its own, it must be obtained from the diet. In regions where iodine deficiency is prevalent, such as some areas of North America, iodized salt is commonly used to ensure an adequate intake of iodine.

By consuming iodized salt in cooking and food preparation, individuals can easily incorporate iodine into their diet. The iodine content in iodized salt is carefully regulated to provide a consistent and reliable source of iodine for the population.

Other dietary sources of iodine include seafood, seaweed, dairy products, and some fruits and vegetables; however, iodized salt remains one of the primary sources of iodine in the North American diet due to its widespread use and availability.

To know more about iodized salt

brainly.com/question/14385116

#SPJ11

Answer:

Explanation:

In 1896 Henri Becquerel was using naturally fluorescent minerals to study the properties of x-rays, which had been discovered in 1895 by Wilhelm Roentgen.

X-rays are neutral and cannot be bent in a magnetic field. The new radiation was bent by the magnetic field so that the radiation must be charged and different than x-rays.

Answer:

A.

The hotter the object the faster the molecules so if the temperature is doubled the molecules go two times faster making the pressure double. Since the molecules are two times faster the pressure will be two times more because it is two times harder to keep the gas in.

Hope this helps

Explanation:

The number of moles of Ba(OH)₂ present in 275 ml of 0.400 M Ba(OH)2 solution is 0.11 moles.

Moles of Ba(OH)₂ present in 275 ml of 0.400 M Ba(OH)₂ solution can be calculated as follows:

First of all, we should be familiar with the formula of Molarity which is as follows:

Molarity (M) = moles of solute / liters of solution We can rearrange this formula to calculate the moles of solute as follows:

moles of solute = Molarity (M) × liters of solution (L)Now let's apply the above formula to the given problem. Molarity (M) = 0.400 M, liters of solution (L) = 275 ml or 0.275 L (since 1 L = 1000 ml)moles of Ba(OH)₂ = 0.400 M × 0.275 L= 0.11 moles.

Therefore, the number of moles of Ba(OH)₂ present in 275 ml of 0.400 M Ba(OH)₂ solution is 0.11 moles.

To know more about moles refer here: https://brainly.com/question/29724957#

#SPJ11

Answer:

Hi

Please mark brainliest ❣️

Thanks

Explanation:

Correct answer is D

Energy A

Look at this

Energy required to break bonds that is intermolecular forces

Using the concepts of balanced equations, we got that Fe³⁺ has 2 ions,

SO₄²⁻ has 1 ions, Sn\(4^{+}\) has 3 ions, Cl⁻ has 1 ions when aqueous solution is formed

A balanced equation is a equation  in which the number of atoms for each element in the reaction and the total charge is  same for both the reactants and the products.  Means, we can say that  the mass and the charge are balanced on both sides of the reaction.

The balanced chemical equation is

4Fe₂(SO₄)₃ + 6SnCl₄------->6Sn(SO₄)₂+8FeCl₃

Hence, after observing the above balanced chemical equations we get when we prepare aqueous solutions of fe2(so 4) 3 and Sncl4  in 1 M, then

2 ions as Fe³⁺ ,1 ions as SO₄²⁻ ,3 ions as Sn\(4^{+}\),1 ions as Cl⁻ will be formed.

To know more about balanced equations, visit here:

https://brainly.com/question/28294176

#SPJ4

Answer:

29.27M

Explanation:

Molar concentration can be calculated using the formula;

Molar concentration (molarity) = number of moles ÷ volume

Mole = mass ÷ molar mass

Where;

Molar Mass of glucose (C6H12O6) = 180.156g/mol

Mass = 433g

Mole = 433/180.156

Mole = 2.40moles

Volume = 82mL

Since 1L = 1000mL

82mL = 82/1000

= 0.082L

Molar conc. = 2.40mol/0.082L

Molar conc. = 29.27M

Answer:

The gas law that applies in this scenario is Boyle's law, which states that the pressure of a gas is inversely proportional to its volume at constant temperature.

Using Boyle's law equation:

P₁V₁ = P₂V₂

where P₁ is the initial pressure, V₁ is the initial volume, P₂ is the final pressure, and V₂ is the final volume.

Plugging in the given values:

P₁ = 760 mmHg

V₁ = 10 L

V₂ = 20 L

Solving for P₂:

P₂ = P₁V₁/V₂ = 760 mmHg x 10 L / 20 L = 380 mmHg

Therefore, the new gas pressure will be 380 mmHg

By using the combined gas law, which states that the pressure, volume, and temperature of a gas are related by the equation:

P1V1/T1 = P2V2/T2

where:

P1 =initial pressure

V1 =initial volume

P2 and V2 are the final pressure and volume, respectively.

We are given that the initial pressure P1 is 760 mmHg and the initial volume V1 is 10 L. We are asked to find the final pressure P2 when the volume increases to 20 L.

we can rearrange the equation to solve for P2:

P2 = (P1V1/T1) x (T2/V2)

Since the temperature is constant, we can deduce the equation to:

P2 = (P1V1)/V2

Deducing the values we have:

P2 = (760 mmHg x 10 L)/20 L

P2 = 380 mmHg

That implies, the new gas pressure will be 380 mmHg when the volume increases to 20 L.

To know more about Combined gas equation:

https://brainly.com/question/17254541?referrer=searchResults

The data and report submission for week 14 involved the synthesis of an ester called banana oil.

Banana oil is a synthetic compound that smells similar to bananas and is commonly used in the production of perfumes and flavorings. The synthesis of banana oil involves combining an alcohol (isoamyl alcohol) and an acid (acetic acid) in the presence of a catalyst (sulfuric acid) to form the ester.

During the experiment, data was collected on the amount of reactants used, the reaction time, and the yield of the ester produced. This data was then used to write a report that summarized the procedure, discussed the results, and analyzed the possible sources of error.

In conclusion, the data and report submission for week 14 focused on the synthesis of banana oil, which is an important ester used in the fragrance and flavor industry. Through the experiment, students were able to gain hands-on experience in the process of esterification and the importance of careful data collection and analysis.

To know more about ester, visit:

https://brainly.com/question/10840252

#SPJ11

The correct chemical formula for diphosphorous pentoxide is P4O10. This compound consists of four phosphorus atoms (P) and ten oxygen atoms (O), resulting in the mentioned formula. It is a white solid substance with a strong affinity for water, and is commonly used as a desiccant and in chemical reactions.

The correct chemical formula for diphosphorus pentoxide is P2O5. This compound is formed by the combination of two atoms of phosphorus and five atoms of oxygen, giving it the molecular formula of P2O5. It is commonly used in the chemical industry as a dehydrating agent and as a raw material for the production of phosphoric acid. Diphosphorus pentoxide is a white, crystalline solid that is highly reactive with water and acids. When it comes into contact with water, it releases a large amount of heat, making it a useful desiccant in chemical reactions that require the removal of water.
To know more about desiccant visit:

https://brainly.com/question/30359532

#SPJ11

Answer:

Explanation:

coffe

Answer:

A is √34

Explanation:

We can solve for the hypotenuse "A" using the Pythagorean theorem.  

a²+b²=c²

3²+5²=c²

9+25=c²

34=c²

√c=√34

c=√34 --> A

The answer would be B: increases

Hope this helps! :)✨

As the water is heated, pressure increases and hence the volume of the balloon increases.

Pressure is defined as the force applied on an object perpendicular to it's surface per unit area over which it is distributed.Gauge pressure is a pressure which is related with the ambient pressure.

There are various units by which pressure is expressed most of which are derived units which are obtained from unit of force divided by unit of area . The SI unit of pressure is pascal .

It is a scalar quantity which is related to the vector area element with a normal force acting on it.It is distributed over solid boundaries and across arbitary sections of fluid normal to the boundaries at every point.Pressure is inversely proportional to volume as per Boyle's law.

Learn more about pressure,here:

https://brainly.com/question/14760196

#SPJ6