This chart lists four kinds of polymers and their sources.

A 2-column table titled polymer examples. The first column labeled name of polymer has entries D N A, cellulose, nylon, hair. The second column titled source of polymer has entries inside of cells, plant material, synthetic material, animal material.

What can be known about all four polymers, despite their differences?

They come from living things.
They share ionic carbon bonds.
They are at least 100 monomers long.
They are made of repeating subunits.

The missing word in the given sentence is "review". It ensures that the research study meets the scientific quality standards, and the research findings are accurate and reliable.

Explanation: Peer review is a critical analysis of the research work done by researchers to ensure the scientific quality of the research study. It is an essential step in the publication of research articles. The process of peer review includes evaluation of the research study by a group of experts, known as peers in the same field as the researcher. Peers examine the research study's originality, accuracy, methodology, and the conclusions drawn from the study.

Peer review is important for the findings of studies into the effects of radiation on humans to be published and shared with other scientists so that the findings can be checked by peer review. It ensures that the research study meets the scientific quality standards, and the research findings are accurate and reliable.

To learn more about review visit;

https://brainly.com/question/32102832

#SPJ11

Answer:

whyyyy?what happened hmmmm hahahahahhajajaha

The correct answer is 0.15.

We are aware that there is 0.05 mol of an unidentified hydrocarbon we will refer to as "X" and that its burning produces 6.6 g of carbon dioxide and 3.6 g of water.

These quantities might be converted to moles by applying the following formula:

amount= mass/ relative atomic mass

Thus, the following equation may be written for H2O: moles = 3.6 / 18 = 0.2 and for CO2: moles = 6.6 / 44 = 0.15.

0.05X + x'O2 = 0.15CO2 + 0.2H2O

This may be made simpler by dividing through by 0.05 (this step is likely to be the most helpful to you), resulting in:

1 x + x O2 = 3 co2 + 4 H2O

The hydrocarbon must have been the source of all the carbon in the carbon dioxide and all the hydrogen in the water.

Accordingly, 4 x 2 = 8 moles of H and 3 x 1 = 3 moles of C.

There are 3/1 = 3 Cs and 8/1 = 8 Hs in one X molecule.

This clearly identifies C3H8 or propane as the hydrocarbon X (dividing by 1 seems unnecessary, but it illustrates the process to use if there were more than one mol of X in the first equation).

To learn more about number of moles of carbon dioxide refer the link:

https://brainly.com/question/12723070

#SPJ9

Answer:

I believe is the npp i kinda forgot how to do these lol

Diagram with npp type shows an atom that is not a form of hydrogen.

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

Learn more about atom,here:

https://brainly.com/question/30898688

#SPJ2

Pathway #1 will give a higher yield because there is much less steric hindrance for primary substrates than for secondary substrates in the SN2 reaction, which is the first mechanism in each of the two pathways.

The SN2 reaction proceeds via a concerted, bimolecular, one-step mechanism, where the nucleophile attacks the electrophilic carbon center, and the leaving group is simultaneously displaced. In pathway #1, the SN2 reaction involves a primary substrate with a less hindered leaving group, which will react faster and give a higher yield.

On the other hand, pathway #2 involves a secondary substrate with a more hindered leaving group, which will react slower and give a lower yield. Hence, pathway #1 is more efficient because of the higher reactivity of the primary substrate and the less steric hindrance in the reaction mechanism.

Therefore, the pathway #1 will give a higher yield than pathway #2 in a multistep reaction pathway because there is much less steric hindrance for primary substrates than for secondary substrates in the SN2 reaction, which is the first mechanism in each of the two pathways.

Learn more about leaving group here:

https://brainly.com/question/31831803

#SPJ11

Among the given materials, alumina (Al2O3) has the lowest conductivity. The order of conductivity, from lowest to highest, is: alumina (Al2O3) < silicon (Si) < silver (Ag).

The conductivity of a material refers to its ability to conduct electric current. In general, metals tend to have higher conductivity compared to non-metals. Among the given options, silver (Ag) is a metal and is known for its high conductivity.

Silicon (Si) is a semiconductor and has moderate conductivity. Alumina (Al2O3), on the other hand, is a non-metal and has significantly lower conductivity compared to silver and silicon. Therefore, alumina (Al2O3) has the lowest conductivity among the given materials.

To learn more about conductivity.

Click here:brainly.com/question/28869256

#SPJ11

The correct answer is  1.342 mol of AgCl. The balanced chemical equation for the precipitation reaction between \(NaCl and AgNO3 is: NaCl (aq) + AgNO3 (aq) → AgCl (s) + NaNO3 (aq)\)

The balanced chemical equation shows that 1 mole of NaCl reacts with 1 mole of AgNO3 to produce 1 mole of AgCl.  Therefore, the limiting reagent will be the reactant that produces the least amount of AgCl. To determine which reactant is limiting, we need to compare the amount of moles of each reactant to the stoichiometric ratio in the balanced equation.

\(For NaCl: 1.342 mol NaCl × (1 mol AgCl/1 mol NaCl) = 1.342 mol AgCl\)

\(For AgNO3: 7.201 mol AgNO3 × (1 mol AgCl/1 mol AgNO3) = 7.201 mol AgCl.\)

Since NaCl produces less AgCl than AgNO3, NaCl is the limiting reagent.

To learn more about balanced chemical equation, visit here

https://brainly.com/question/28294176

#SPJ4

Dr. West mixes zinc (Zn) and hydrochloric acid (HCl) together in his laboratory. The two chemicals react to form hydrogen gas (H₂) and zinc chloride (ZnCl₂). The balance chemical equation is given as :

Zn + 2HCl  ---->  ZnCl₂   +   H₂

Zinc react very rapidly with hydrochloric acid to form zinc chloride and hydrogen gas. This reaction is called as displacement reaction because zinc is displaces the hydrogen and form zinc chloride and hydrogen gas.  The reaction is exothermic because it releases a lot of heat.

Thus, Dr. West mixes zinc (Zn) and hydrochloric acid (HCl) together in his laboratory. The two chemicals react to form hydrogen gas (H₂) and zinc chloride (ZnCl₂). The balance chemical equation is given as :

Zn + 2HCl  ---->  ZnCl₂   +   H₂

To learn more about Displacement reaction here

https://brainly.com/question/3172917

#SPJ1

Steam causes more severe burns than boiling water because steam has more heat energy. When water is boiled, it transforms into steam, and it needs to release its energy, which is stored in the form of heat. Due to the high temperature, steam transfers a large amount of heat energy to the human body.

It takes a significant amount of energy to convert water to steam, and the energy is released in the form of heat. Steam is much hotter than boiling water at the same temperature. The temperature of boiling water is 100°C, while the temperature of steam is around 212°F. The difference in temperature is because of the amount of heat energy present in steam. The higher heat energy means that steam can cause more severe burns than boiling water. Steam can cause second-degree burns in just one second, while boiling water takes about four seconds to cause the same injury. Steam not only transfers heat energy to the skin faster but also penetrates deeper into the skin due to its gaseous state. Steam also sticks to the skin for longer than boiling water, which further increases the amount of heat energy absorbed by the skin.

In summary, steam causes more severe burns than boiling water because it has more heat energy, a higher temperature, and penetrates deeper into the skin due to its gaseous state.

To know more about energy visit-

https://brainly.com/question/1932868

#SPJ11

Answer:

2. 2.41 x 10^22 molec

Explanation:

Answer:

2. 2.41 x 10^22 molec

Explanation:

the other person said that and i got right on my quiz

Answer: The partial pressure of neon in the mixture is 263 mm Hg

Explanation:

According to Dalton's law, the total pressure is the sum of individual pressures.

\(p_{total}=p_{He}+p_{N_2}+p_{Ne}\)

Given : \(p_{total}\) =total pressure of gases = 815 mm Hg

\(p_{He}\) = partial pressure of helium = 201 mm Hg

\(p_{N_2}\) = partial pressure of nitrogen = 351 mm Hg

\(p_{Ne}\) = partial pressure of Neon = ?

putting in the values we get:

\(815mm Hg=201 mm Hg+351 mm Hg+p_{Ne}\)  

\(p_{Ne}=263mmHg\)

The partial pressure of neon in the mixture is 263 mm Hg

Answer:

0.54 J/goC

Explanation:

Recall that we define the heat transferred as ;

H= mcθ

Where;

H= heat transferred = 112300J

m= mass of the metal= 240g or 0.24 Kg

c= specific heat capacity of the metal = the unknown

θ= change in temperature = (880°C-13°C) = 867°C

Substituting values and making the specific heat capacity the subject of the formula;

c= H/mθ

c= 112300/ 240×867

c= 0.54 J/goC

Hence, the specific heat capacity of the metal is 0.54 J/goC.

Answer:

3, 4 ,1

Explanation:

\(\\ \rm\Rrightarrow Sodium\:Hydrogen\:carbonate=NaHCO_3\)

\(\\ \rm\Rrightarrow Calcium\:Hydroxide=Ca(OH)_2\)

\(\\ \rm\Rrightarrow Silver\:Nitrate=Ag(NO_3)_2\)

\(\\ \rm\Rrightarrow Ammonium\:Sulphate=(NH_4)_2SO_4\)

\(\\ \rm\Rrightarrow Ferric\:oxide=Fe_2O_3\)

The molar heat of solution of ammonium chloride salt, also known as the enthalpy of solution, refers to the amount of heat absorbed or released when one mole of the salt dissolves in water at a constant pressure. The long answer to your question involves several factors that affect the molar heat of solution of ammonium chloride salt.

Ammonium chloride salt is an ionic compound that dissociates into ammonium ions (NH4+) and chloride ions (Cl-) when it dissolves in water. This process requires energy, which is known as the lattice energy. Therefore, the molar heat of solution of ammonium chloride salt is influenced by the lattice energy of the compound.

The concentration of the solution can also affect the heat of solution because it affects the interactions between the ions and the solvent molecules. the molar heat of solution of ammonium chloride salt depends on the lattice energy, hydration energy, temperature, and concentration of the solution. The exact value of the molar heat of solution can be determined experimentally by measuring the temperature change during the dissolution process.

To know more about  heat visit :-

https://brainly.com/question/12111048

#SPJ11

The molarity of a substance is simply defined as the mole of solute per unit litre of the solution. Mathematically, it is expressed as:

\(Molarity = \frac{mole}{volume }\)

From the question given above, the following data were obtained:

Molarity of KCl = 2.45 M

Mole of KCl = 0.5 mole

The volume of KCl needed can be obtained as follow:

\(Molarity = \frac{mole}{volume }\\\\2.45 = \frac{0.5}{Volume }\)

Cross multiply

2.45 × Volume = 0.5

Divide both side by 2.45

\(Volume = \frac{0.5}{2.45}\\\)

Therefore, 0.20 L is needed to make the solution.

Learn more: https://brainly.com/question/23816507

Its A CUHH!!!!!!

WHY???- BC I SAID SO CUHH

Answer:

well technically yes because the instuatunilased work porgrame developed the technolgy to recurr the explicit language being covered between the bonds of the suplex city and the dark matter atoms which gives you superpowers which vary depending on the type of bonds linking the atoms.

Explanation:

An adjustable-volume micropipette with a range of 0.5-10 μL would be the most accurate for dispensing 125 μL of solution.

What is the micropipette ?

A micropipette is a precision instrument used to accurately measure and transfer very small volumes of liquid, typically between 0.5 µL and 10 mL. It is commonly used in laboratories to prepare samples for chemical analysis and in medical applications to dispense precise amounts of medication. The micropipette is composed of a plunger, a tip, and a cylinder. The plunger is used to draw liquid into the tip, and the cylinder is used to release the liquid. The micropipette is usually operated using a thumbwheel or a push button that controls the plunger. The tip of the micropipette is designed to fit a range of different sized microtubes, allowing for accurate and repeatable transfer of liquids. The micropipette can be calibrated for accuracy, making it an invaluable tool for laboratories that need precise measurements of liquids.

To learn more about micropipette

https://brainly.com/question/28425080

#SPJ4

Explanation:

There is more solute than the solvent can hold (C).

Answer:

Drinking water should have sufficiently low levels of dissolved salts or microbes.

Explanation:

Answer:

yes

Explanation:

bc god exist

Answer:

3200

Explanation:

ionic compounds are electrically neutral overall. therefore, the sum of the charges on the cation and anion in each formula unit must be equal to zero

Ions are charged particles that form when an atom (or group of atoms) receives or loses an electron, and ionic compounds are composed of these charged particles. An anion is a negatively charged ion, whereas a cation is a positively charged ion.

Learn more about Ionic Compound here:

https://brainly.com/question/2687188

#SPJ4

Answer:

D. Element

Explanation:

Fe is an element. It isn't more than one element chemically combined (compound), it isn't a charged particle (ion), and it isn't the smallest possible unit of multiple atoms combined together (molecule).

The ability of the blue whale to distinguish between the esophageal and pulmonary passages accounts for the variation in how it obtains molecules between food and air.

Whales are big mammals that live in large quantities of water. They consume their prey whole in order to feed on smaller animals. Water inhalation throughout eating is reduced thanks to the esophagus's separation from the lung. The blowhole mostly on whale's head aids in its ability to breathe in air (oxygen) when it is near the water's surface.

The body's cells are supplied with oxygen and nutrients through the heart, blood, and blood vessels. Blood transports the lungs with carbon dioxide (for exhale) and collects oxygen through the network of arteries, veins, and capillaries. The blood collects food nutrients from the small intestine and transports them to each and every cell in the body.

Therefore,  ability of the blue whale to distinguish between the esophageal and pulmonary passages accounts for the variation in how it obtains molecules between food and air.

To know more about food.

https://brainly.com/question/14898538

#SPJ1

The percent ionization of 0.20 M iodic acid is approximately 92.3%.

To determine the percent ionization of iodic acid (HIO3), we need to calculate the concentration of ionized H+ ions compared to the initial concentration of HIO3.

The ionization of iodic acid can be represented by the following equilibrium equation:

HIO3(aq) ⇌ H+(aq) + IO3-(aq)

The equilibrium constant expression (Ka) for this reaction is given as:

Ka = [H+(aq)][IO3-(aq)] / [HIO3(aq)]

Given that the Ka value for iodic acid is 1.7 × 10^(-1), we can set up the following expression:

1.7 × 10^(-1) = [H+(aq)][IO3-(aq)] / [HIO3(aq)]

Since the initial concentration of HIO3 is 0.20 M, we can assume that the concentration of H+ and IO3- ions formed at equilibrium is x.

Thus, the equilibrium expression becomes:

1.7 × 10^(-1) = x^2 / (0.20 - x)

To simplify the calculation, we can assume that x is very small compared to 0.20, so we can approximate 0.20 - x as 0.20.

1.7 × 10^(-1) = x^2 / 0.20

Cross-multiplying, we get:

0.034 = x^2

Taking the square root of both sides, we find:

x ≈ 0.1846

The percent ionization is given by:

Percent Ionization = (concentration of ionized H+ ions / initial concentration of HIO3) * 100

Plugging in the values, we have:

Percent Ionization = (0.1846 / 0.20) * 100

Percent Ionization ≈ 92.3%

Know more about ionization here:

https://brainly.com/question/1602374

#SPJ11

Answer:

Nonpolar molecules

Explanation:

If you were to spill a little benzoic acid as you mix it with the lauric acid, the calculated molecular weight would be too high.

This is because the amount of benzoic acid would be greater than the amount of lauric acid, and the molecular weight of benzoic acid is higher than the molecular weight of lauric acid.

The molecular weight of a substance is the sum of the atomic weights of the atoms that make up the substance. Benzoic acid has a molecular weight of 122.12 g/mol, while lauric acid has a molecular weight of 200.32 g/mol.

If you were to spill a little benzoic acid, the total amount of benzoic acid and lauric acid would be greater than the amount of lauric acid that would be present if no benzoic acid were spilled.

This would cause the calculated molecular weight to be higher than the actual molecular weight of lauric acid.

To avoid this, it is important to be careful when mixing benzoic acid and lauric acid. It is also important to use a balance that is accurate to at least 0.01 g to measure the amounts of benzoic acid and lauric acid.

To know more about molecular weight, refer here:

https://brainly.com/question/31978089#

#SPJ11

Answer:

Graduated cylinders, beakers, volumetric pipets, burets and volumetric flasks are five kinds of glassware often used to measure out specific volumes. Volumetric pipets, flasks and burets are the most accurate; the glassware makers calibrate these to a high level of accuracy.

Explanation:

hope this helps :)