Which term describes the repeated arrangement of the same molecule?

Answer:

[tex]{ \sf{Ca _{3} P_{2} }}[/tex]

H2CO3 is an acid because it gave away a proton to become HNO3~.

HNO3~ is a conjugate Base because Acids become conjugate Bases after giving away a proton.

C5H5N is a base because it accepted the proton from H2CO3 to become HC5H5N+.

HC5H5N+ is a conjugate Acid because Bases become Conjugate Acids after accepting a proton.

Answer:

Around 46° F (7.8° C)

Explanation:

"Scientists have predicted that the global average temperature during the ice age was around 46 degrees Farenheit (7.8 degrees Celsius.) However, the polar regions were far colder, around 25 degrees Fahrenheit (14 degrees Celsius) colder than the global average."

Source: http://www.weforum.org

Answer:

Explanation:

lipids

Glycerophospholipids are by far the most abundant lipids in cell membranes. Like all lipids, they are insoluble in water, but their unique geometry causes them to aggregate into bilayers without any energy input.

According to ideal gas equation if the temperature and pressure remained constant, then the volume of the gas in balloon is fixed.

The equation of state for a fictitious perfect gas is known as the ideal gas law, sometimes known as the generic gas equation. Although it has some restrictions, it is a good approximation of the behavior of numerous gases under various circumstances. The sole interaction between molecules of an ideal gas would be an elastic collision when they collided or an elastic collision with the container walls.

The volume of a specific quantity of a gas is inversely proportional to its pressure at constant temperature. The following is a concise description of what is now known as Boyle's law: When held at a fixed temperature, the volume of a given quantity of gas is inversely proportional to the pressure at which it is measured.

Thus, according to ideal gas equation if the temperature and pressure remained constant, then the volume of the gas in balloon is fixed.

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Answer:

7.2 moles of titanium weigh 344.7 grams.

Explanation:

Molar mass of titanium = 47.88 g

[tex]1 \: mole \: of \: titanium = 47.88 \: grams \\ 7.2 \: moles \: of \: titanium = g[/tex]

solve for g

[tex]g = ( \frac{7.2 \times 47.88}{1} ) \\ g = 344.7 \: grams[/tex]

Answer:

[tex]\boxed {\boxed {\sf 344.7 \ g \ Ti}}[/tex]

Explanation:

We are asked to find the mass of 7.2 moles of titanium.

To convert from moles to grams, we use the molar mass. This value is the mass of 1 mole of a substance. They are equivalent to the atomic masses found on the Periodic Table, but the units are grams per moles instead of atomic mass units.

Look up titanium's molar mass on the Periodic Table.

Convert moles to grams using dimensional analysis. First, set up a ratio using the molar mass.

[tex]\frac {47.87 \ g \ Ti}{1 \ mol \ Ti}[/tex]

We are converting 7.2 moles to grams, so we multiply the ratio by this value.

[tex]7.2 \ mol \ Ti *\frac {47.87 \ g \ Ti}{1 \ mol \ Ti}[/tex]

The units of moles of titanium cancel.

[tex]7.2 *\frac {47.87 \ g \ Ti}{1 }[/tex]

The denominator of 1 can be ignored (a number over 1 is just the number).

[tex]7.2 *47.87 \ g \ Ti}[/tex]

[tex]344.664 \ g \ Ti[/tex]

We are asked to round to the nearest tenth. The 6 in the hundredth place tells us to round the 6 in the tenth place up to a 7.

[tex]344.7 \ g \ Ti[/tex]

There are approximately 344.7 grams of titanium in 7.2 moles of titanium.

Answer:

An ecosystem encompasses living organisms and the nonliving elements of their environments. Hence, the components of an ecosystem include animals, plants, microorganisms, rocks, soil, minerals, atmosphere, and the surrounding water masses. An ecosystem can be huge, cutting across several nations, or it can be relatively small, such as the body of an animal, which is home to numerous microorganisms.

We can describe ecosystems under two headings – natural ecosystems and unnatural ecosystems. Unnatural ecosystems, which include agricultural and urban areas, are greatly modified and maintained by human activity. Conversely, natural ecosystems are self-sufficient, balanced ecological units, with a high proportion of native biodiversity and minimal human disruption.

The natural ecosystem is broad. It is divided into two major groups – terrestrial and aquatic ecosystems. These are further divided into many other smaller types of ecosystems as outlined in this article.

Explanation:

Hope it helps.. if yes, plz mark me as brainliest

Answer:

There are many reagents.

1. Use acidified potassium permanganate solution

2. Use acidified potassium dichromate solution

3. Fehling solution.

4. Silver/ oxygen at 500°C

5. Copper/ oxygen at 300°C

6. Lucas reagent ( anhydrous zinc and conc. hydrochloric acid)

Explanation:

Observations:

[with acidified potassium permanganate solution]

» Ethanol : The purple solution turns colourless.

» 2-methyl-2-propanol : no observable change.

[with acidified potassium dichromate solution]

» Ethanol : orange solution turns green

» 2-methyl-2-propanol : no observable change.

[Fehling solution]

» Ethanol : a white precipitate is formed

» 2-methyl-2-propanol : no observable change

[tex]\boxed{\sf Density=\dfrac{Mass}{Volume}}[/tex]

[tex]\\ \sf\longmapsto Density=\dfrac{9.2}{12.3}[/tex]

[tex]\\ \sf\longmapsto Density=0.74g/cm^3[/tex]

It will float in water

Answer:

[tex]\boxed {\boxed {\sf 4.685 \times 10^{24} \ Fe \ atoms}}[/tex]

Explanation:

We are asked to convert grams of iron to atoms of iron.

First, we convert grams to moles. We use the molar mass or the mass in 1 mole of a substance. This is found on the Periodic Table because the molar mass is equal to the atomic mass, but the units are grams per mole instead of atomic mass units. Look up iron's molar mass.

We convert using dimensional analysis, so we must set up a ratio using the molar mass.

[tex]\frac {55.84 \ g \ Fe}{ 1 \ mol \ Fe}[/tex]

We are converting 434.52 grams to moles, so we multiply by this value.

[tex]434.52 \ g \ Fe *\frac {55.84 \ g \ Fe}{ 1 \ mol \ Fe}[/tex]

Flip the ratio so the units of grams of iron cancel.

[tex]434.52 \ g \ Fe *\frac { 1 \ mol \ Fe}{55.84 \ g \ Fe}[/tex]

[tex]434.52 *\frac { 1 \ mol \ Fe}{55.84}[/tex]

[tex]\frac { 434.52}{55.84} \ mol \ Fe[/tex]

[tex]7.781518625 \ mol \ Fe[/tex]

Next, we convert moles to atoms. We use Avogadro's Number or 6.02 ×10²³. It is the number of particles (atoms, molecules, formula units, etc) in 1 mole of a substance. For this problem, the particles are atoms of iron. We set up another ratio using this number.

[tex]\frac {6.02 \times 10^{23} \ atoms \ Fe }{ 1 \ mol \ Fe}[/tex]

Multiply by the number of moles we calculated.

[tex]7.781518625 \ mol \ Fe *\frac {6.02 \times 10^{23} \ atoms \ Fe }{ 1 \ mol \ Fe}[/tex]

The units of moles of iron cancel.

[tex]7.781518625 *\frac {6.02 \times 10^{23} \ atoms \ Fe }{ 1 }[/tex]

[tex]4.68447421 \times 10^{24} \ atoms \ Fe[/tex]

The correct answer choice is Choice 3: 4.685 × 10²⁴ atoms of iron.

Answer:

I think long roots

Explanation:

Explanation:

they do not break down quickly or easily and create a lot of pollution (like microplastics)

Answer:

im not sure but i think its four directions

Hi,

The valves in the heart open and close to move blood in between heart chambers.

Answer:

d) one direction

Answer:

D) 152 g

Explanation:

a mass of 1 mol Cr2O3 = 2 × 52 + 3 × 16 = 152 g number of moles of Cr2O3.

Answer:

number of moles of gas increases the volume also increases.

Answer:

option (D) NaOH is right answer

A neutralization reaction is "a reaction in which an acid and a base react to form water and a salt and involves H+ ions and OH- ions to produce water.

An acid is "any hydrogen-containing substance that is capable of donating a proton or hydrogen ion to another substance".

Base is "a substance that gets dissociated in an aqueous solution to form hydroxide ions OH-".

Hence, NaOH can be used to neutralize HF.

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Answer:

isn’t it reactants and products?

Explanation:

Answer: reactants and products

Explanation:

Answer:

^#))(899900000)My020

This reaction achieved by  Friedrich Wöhler led to the birth of synthethic organic chemistry.

Prior to the successful synthesis of urea by Friedrich Wöhler in the year 1828, chemists believed that it is purely impossible to synthesize various organic substances in the laboratory owing to the absence of an imaginary "vital force". responsible for the formation of those substances.

However, the synthesis of urea by Friedrich Wöhler opened up the idea of laboratory organic synthesis which have blossomed into the present synthetic organic chemistry.

The equation for the synthesis of urea from ammonium cyanate is shown in the image attached.

Organic compounds which occur in nature could now be synthesized and studied under laboratory conditions.

Hence, this reaction achieved by  Friedrich Wöhler led to the birth of synthethic organic chemistry.

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Answer:

removing the electron.

The term that would change the element represented in the electron module is removing the electron​. The correct option is d.

Chemical elements are the elements that are represented in the periodic table. There are 118 chemical elements discovered and represented in the periodic table. There are many more to be discovered.

The model is of an element. Elements are made up of atoms, and atoms contain charged particles. Out of these particles, electrons are revolved around the nucleus, which determined the atomic number of the element, and different elements have different numbers of electrons.

Removing the electron from the element, will change the element or change its atomic number.

Thus, the correct option is d. removing the electron​.

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Answer:

i THINK the answer to this is C) aldehyde

Answer:

The answer is C, the guy above is correct.

Explanation:

Answer:

It is a becaues i am a doctor and i know about that

Explanation:Just here to help

Explanation:

1. boiling and melting point

2. electrical conductivity

3. Bond strength

4. bond length

A covalent bond consists of negative electrons that are shared in between atoms. Because of this bond, they possess and manifest physical abilities, including electrical pressure/conductivity and lower melting points compared to ionic compounds.

Answer:

d. 0.208 M NaOH

Explanation:

M[NaOH] = 23+16+1= 40g/mol

2.40L = 2.4dm3

M=m/Mv

M=20.0g/40g/mol×2.4dm3

M=20.0g ÷ 96

M= 0.208 M NaOH

The statement of the molarity of a solution is "0.208 M NaOH."

The amount of a chemical substance in a defined volume of the solution is measured in molarity (M). The moles of a solute per litre of a solution is known as molarity. The molar concentration of a solution is also known as molarity.

In order to determine the molarity, initially calculate the number of moles of sodium hydroxide by dividing the given mass by molar mass of NaOH.

Gram to mole conversion factor,

Moles of NaOH

[tex]= (20.0\;g) * \frac{(1\;mol\;NaOH)}{(39.998\;g)} \\= 0.50\;mol[/tex]

Now, the molarity of the solution comes out to be,

[tex]Molarity = \frac{Moles\;of\;the\;solute}{Volume\;of\;the\;solution}[/tex]

So,

[tex]= \frac{0.0500 \;mol}{2.40\;L} \\= 0.208\;\frac{mol}{L} = 0.208\;M[/tex]

Hence the correct option is b.

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Answer:

C. Golden rice enriched with vitamin A

C₆H₁₂O₆ is the molecular formula of gulcozo.

Explanation:

Introducción:

La designación de los compuestos orgánicos puede hacerse utulizando alguno de los

siguientes sistemas:

a) Mediante nombres triviales o comunes, que expresen alguna propiedad característica

(sabor, color, acción fisiológica, etc.) o hagan referencia a la materia de la cual se extrajo el

compuesto.

b) Mediante nombres racionales que proporcionen una idea de su constitucion química y

destaquen sus analogías estructurales.

La necesidad de una nomenclatura sistemática, que expresara en forma clara, conforme

a normas precisas, el nombre y la estructura de los compuestos orgánicos, ha sido motivo de

preocupación permanente y observada a través de los numerosos congresos internacionales

que, al efecto, se han realizado en diversas oportunidades.

Las bases del actual sistema de nomenclatura fueron establecidas por una comisión que

se reunió en Ginebra en 1892. Posteriormente, fue perfeccionado y ampliado por el Comité de

Nomenclatura de la Unión Internacional de Química Pura y Aplicada, por lo que se conoce

como sistema I.U.P.A.C. (International Union of Pure and Applied Chemistry).

En las reglas aprobadas se ha tratado de introducir los menores cambios posibles a la

terminología universalmente adoptada. El sistema tiene la necesaria flexibilidad como para

adaptar la forma precisa de las palabras, de las terminaciones, etc. a las características de

distintos idiomas.

El nombre de los hidrocarburos consta de tres partes: a) la raíz, que indica el esqueleto

carbonado; b) la terminación o sufijo, que indica el grado de saturación, y c) el prefijo que

diferencia las distintas estructuras isoméricas (distintas estructuras construidas con exactamente

los mismos átomos).

Ej.: CH3-CH2-CH2-CH2-CH3 pentano (tambien llamado n-pentano)

penta: raíz que señala el número de átomos de carbono que componen la cadena principal

del compuesto.

-ano: sufijo que indica que el hidrocarburo es saturado

Answer:

13.5%

Explanation:

To answer this you need to understand that percentage error can never be negative as we use absolute value in the equation

To get molar/atomic mass = mass/moles

=0.3681g/(6.514×10^-3)moles

=56.509g/moles

percentage error = (65.38-56.509)/65.38 ×100

=13.56% (this is what I'm getting without rounding off your question wasn't specific on how many d.p to use)

That is because one of the Hydrogens of Formic acid is a part of the functional group (COOH). so to make sure the reader understands that, they second H is written separately