How many molecules are in 25.3g of C2H4O

Answer:

75 m in 1 min

Explanation:

Answer:

I'm pretty sure the answer is B.

Explanation:

I hope this helps

Isotopes are different from one another as they have  different numbers of neutrons.

Isotopes are defined as substances having same number of protons but different number of neutrons.Number of protons is characteristic for determining position of elements in the periodic table.

Since,all isotopes have the same number of protons and hence have same position.They have similar chemical properties as they have same number of electrons.

They find applications in the field of nuclear medicine and oil and gas research . There are 2 types of isotopes : stable and unstable

Unstable isotopes are radioactive and are called as radioisotopes.Some of these isotopes are man -made and hence also called as artificial isotopes.Every element has an isotope which is either man-made or natural .

Many properties of isotopes depend on mass which is measured in atomic mass unit. The difference in actual mass and mass number is called mass defect.

Learn more about isotopes,here:

https://brainly.com/question/27475737

#SPJ2

In methylamine (CH3NH2), the highlighted atom that makes it a Bronsted-Lowry base is the nitrogen (N) atom.

Bronsted-Lowry theory defines an acid as a proton (H+) donor and a base as a proton acceptor. In the case of methylamine, the lone pair of electrons on the nitrogen atom can readily accept a proton (H+), indicating its basic nature.

When methylamine acts as a base, it can accept a proton to form the methylammonium cation (CH3NH3+). In this process, the lone pair of electrons on the nitrogen atom forms a coordinate bond with the proton, resulting in the formation of a new bond.

The basicity of a compound is determined by the availability of a lone pair of electrons that can participate in bonding. In methylamine, the nitrogen atom has an unshared pair of electrons, making it capable of accepting a proton and acting as a base.

The nitrogen atom in methylamine is responsible for its Bronsted-Lowry basicity, as it can readily accept protons due to the presence of a lone pair of electrons.

For such more questions on atom

https://brainly.com/question/6258301

#SPJ8

Answer:

Waxing Crescent: We see the waxing crescent phase as a thin crescent opening to the left. First Quarter: We see the first quarter phase as a half moon. Waxing Gibbous: The waxing gibbous phase is between a half moon and full moon. Waxing means it is getting bigger.

Explanation:

Image 3 and image 6 models represent a mixture of two compounds in the attached diagram below.

Pure substances can be described as elements that cannot be further broken down into simple substances that exhibit only one type of atom in the whole composition.

A pure substance can be defined as made up of two or more elements that are chemically combined and have a set composition such kind of pure substance is known as a compound.

A mixture is constructed of two or more different substances which are only physically combined. A mixture can break down into its original components.

The chemical composition of a heterogeneous mixture is non-uniform throughout the mixture while the chemical composition of the substance in a homogeneous mixture is always uniform.

The mixture can be defined as a compound that is only physically combined not chemically. A single element is considered a pure substance, not a compound.

Learn more about mixture and a pure substance, here:

brainly.com/question/6243623

#SPJ2

Answer: I think its a hypothesis.

Answer:

if hyper its probaly because the have ADHD which is a type of drug that helps people with behavior disorders . the might have ticks wich is something that people can not control.

Explanation:

Answer:

chloroplast

Explanation:

i took the test

Answer:

plants

animals

Explanation:

From the given choices only plants and animals are biotic in nature. Biotic factors are factors that can be attributed to living organisms.

The other choices such as water, light and minerals are abiotic. They are do not originate from living organisms.

Both biotic and abiotic factors are present within the ecosystem. In fact, they influence the ecosystem to a very large extent.

Together, these factors shapes the ecosystem.

The following table for the reactions that occur when black powder is ignited​.

What is black powder?

In order to maintain a reaction, black powder needs a fuel (charcoal), an oxidizer (saltpeter or niter), and a stabilizer (sulfur). Without the oxidising agent, the reaction would take a long time, similar to a wood fire. The saltpeter in gunpowder provides the oxygen that carbon in a fire needs to draw from the surrounding atmosphere.

What is reactions?

A chemical reaction occurs when one or more chemicals, also known as reactants, change into one or more new substances, also known as products. Both chemical constituents and compounds are substances.

The completion of the above table when black powder is ignited-

The name of the compound=Potassium nitrate

The formula of the compound=KNO3

The balanced chemical equation-

4K NO3 + 2K 20 + 2N2 + 302

Type of reaction-

This is a decomposition reaction.

Mole ratio of reactants to products-

reactants : products=4 : 7

The name of the compound=Charcoal

The formula of the compound=C

The balanced chemical equation,

C+02 + CO2

Type of reaction-

This is a combustion reaction.

Mole ratio of reactants to products-

reactants : products=2 : 1

The name of the compound=Sulfur

The formula of the compound=S

The balanced chemical equation,

S + 02 → SO2

Type of reaction-

This is also a combustion reaction.

Mole ratio of reactants to products-

reactants : products=2 : 1

The name of the compound=Potassium chlorate

The formula of the compound=KClO3

The balanced chemical equation,

2K CIO3 → 2KCI + 302

Type of reaction-

This is a decomposition reaction.

Mole ratio of reactants to products-

reactants : products=2 : 5

The name of the compound=Potassium perchlorate

The formula of the compound=KClO4

The balanced chemical equation,

KClO4\righteous KCl+2O2

Type of reaction-

This is a decomposition reaction.

Mole ratio of reactants to products-

reactants : products=1 : 3

Therefore,  above table for the reactions that occur when black powder is ignited​.

Learn more about ignition from the given link.

https://brainly.com/question/28321742

#SPJ4

In the context of atomic orbital (AO) wavefunctions, the terms "radial node" and "nodal plane" refer to different aspects of the wavefunction's behavior.

A radial node is a region in the AO wavefunction where the probability of finding an electron is zero along the radial direction. In other words, it represents a spherical shell where the electron is unlikely to be found. The number of radial nodes is determined by the principal quantum number (n) of the orbital. For example, the 2s orbital has one radial node, while the 2p orbital has no radial nodes.

On the other hand, a nodal plane is a flat plane within the AO wavefunction where the probability of finding an electron is zero along a particular direction. It represents a surface that divides the orbital into two regions of opposite phases. The number of nodal planes is determined by the angular quantum numbers (l and m) of the orbital. For example, the 2s orbital has no nodal planes, while the 2p orbital has one nodal plane (the xz or yz plane).

Radial nodes arise from the radial part of the wavefunction because they depend on the distance from the nucleus. The radial part determines the distribution of the electron density as a function of distance, and the nodes correspond to regions where the density drops to zero.

On the other hand, nodal planes arise from the angular part of the wavefunction because they depend on the orientation and shape of the orbital. The angular part describes the angular distribution of the electron density around the nucleus, and the nodal planes correspond to regions where the phase of the wavefunction changes sign.

In summary, radial nodes are related to the distance from the nucleus and arise from the radial part of the wavefunction, while nodal planes are related to the orientation and shape of the orbital and arise from the angular part of the wavefunction. The 2s orbital has one radial node and no nodal planes, while the 2p orbital has no radial nodes and one nodal plane.

learn more about radial node here

https://brainly.com/question/31829965

#SPJ11

Paper chromatography is a technique that is used for the separation of different types of chemical substances. The driving force behind paper chromatography is capillary action. This is the ability of a liquid to flow in narrow spaces, against gravity.

The ability of the solvent to migrate into the paper fibers is driven by the capillary action. During the paper chromatography process, the paper strips absorb the solvent and the mixture of different molecules, separating them into individual components. Capillary action is caused by the interaction between the solvent, the paper fibers, and the molecules of the sample. The solvent molecules will start to move up the paper as a result of capillary action. This movement will cause the molecules of the sample to be separated based on their physical and chemical properties.The driving force behind paper chromatography is the capillary action, which causes the solvent molecules to migrate up the paper, and the sample molecules to be separated based on their physical and chemical properties.

For more information on chromatography visit:

brainly.com/question/11960023

#SPJ11

From the reaction of 74.2 g of N2 and 14.0 moles of H2, approximately 3.18 x 10^24 molecules of NH3 can be produced.

To determine how many molecules of NH3 can be produced from the reaction of 74.2 g of N2 and 14.0 moles of H2, we need to use the balanced chemical equation for the reaction:

N2 + 3H2 -> 2NH3

First, let's convert the mass of N2 to moles. The molar mass of N2 is 28.02 g/mol, so:

74.2 g N2 * (1 mol N2/28.02 g N2) = 2.64 mol N2

Next, we need to determine the limiting reactant. To do this, we compare the moles of N2 and H2 in a 1:3 ratio. Since there are 2.64 moles of N2 and 14.0 moles of H2, we divide the moles of each reactant by their respective coefficients in the balanced equation:

2.64 mol N2 / 1 = 2.64
14.0 mol H2 / 3 = 4.67

The mole ratio tells us that for every 1 mole of N2, we need 3 moles of H2. Since we have more moles of H2 (4.67) than moles of N2 (2.64), H2 is in excess, and N2 is the limiting reactant.

Now we can calculate the moles of NH3 produced. According to the balanced equation, 1 mole of N2 produces 2 moles of NH3. So:

2.64 mol N2 * (2 mol NH3/1 mol N2) = 5.28 mol NH3

Finally, we can convert moles of NH3 to molecules. Avogadro's number tells us that 1 mole of any substance contains 6.022 x 10^23 molecules. Therefore:

5.28 mol NH3 * (6.022 x 10^23 molecules NH3/1 mol NH3) = 3.18 x 10^24 molecules NH3

Therefore, from the reaction of 74.2 g of N2 and 14.0 moles of H2, approximately 3.18 x 10^24 molecules of NH3 can be produced.

Learn more about reaction here:-

https://brainly.com/question/16737295

#SPJ11

Answer:

Lightning

Explanation:

Lightning is a spark caused when electricity that has built up in a thunderhead discharges.

Answer:

General equation for a double-displacement reaction:  

AB + CD --> AC + BD

• sodium chloride – NaCl copper sulfate – CuSO₄  

NaCl + CuSO₄ --> Na₂SO₄ + CuCl₂

The products formed are sodium sulfate and copper (II) chloride.

Copper (II) chloride forms a blue colored solution.

• sodium hydroxide – NaOH copper sulfate – CuSO₄  

NaOH + CuSO₄ --> Na₂SO₄ + Cu(OH)₂

The products formed are sodium sulfate and copper (II) hydroxide.

Copper (II) hydroxide forms a blue colored solution.

• sodium phosphate – Na₂HPO₂ copper sulfate – CuSO₄  

Na₂HPO₄ + CuSO₄ --> Na₂SO₄ + CuHPO₄

The products formed are sodium sulfate and copper (II) hydrogen phosphate.

Copper (II) hydrogen phosphate forms a blue colored solution.

• sodium chloride – NaCl silver nitrate – AgNO₃  

NaCl + AgNO₃--> AgCl + NaNO₃

The products formed are silver chloride and sodium nitrate.

Silver chloride forms a white precipitate.

• sodium hydroxide – NaOH silver nitrate – AgNO₃  

NaOH + AgNO₃   --> NaNO₃ + AgOH

The products formed are silver hydroxide and sodium nitrate.

Silver hydroxide forms a white precipitate.

• sodium phosphate – Na₂HPO₄ silver nitrate – AgNO₃

Na₂HPO₄ + AgNO₃  --> NaNO₃ +  Ag₂HPO₄

The products formed are sodium nitrate and silver hydrogen phosphate.

Silver hydrogen phosphate forms a colorless solution.

Explanation:

The two possible products in the precipitation reaction of copper (II) chloride and sodium phosphate are copper(II) phosphate and sodium chloride.

The empirical formula of the copper phosphate =\(Cu_3P_2O_8\)

The empirical formula of the sodium chloride = \(NaCl\)

Explanation:

\(3CuCl_2(aq)+2Na_3PO_4(aq)\rightarrow Cu_3(PO_4)_2(s)+ 6NaCl(aq)\)

Charge on the copper(II) ion = +2

Charge on the phosphate ion = -3

The ratio of a number of copper, phosphorus, and oxygen atoms:

\(Cu:P:O=3:2:8= 3:2:8\)

The empirical formula of the copper phosphate =\(Cu_3P_2O_8\)

Charge on the sodium ion = +1

Charge on the chloride ion = -1

The ratio of a number of sodium and chlorine atoms:

\(Na:Cl=1:1=1:1\)

The empirical formula of the sodium chloride = \(NaCl\)

The two possible products in the precipitation reaction of copper (II) chloride and sodium phosphate are copper(II) phosphate and sodium chloride.

Learn more about empirical formula here:

brainly.com/question/1247523?referrer=searchResults

brainly.com/question/1363167?referrer=searchResults

Answer:

kjdbfskfgshfk skjdbfsk dskjbf dskjbsd dkvhsf akb

Explanation:

Answer:

modelo de Bohr

Explanation:

En el modelo de Bohr del átomo, los electrones viajan en órbitas circulares definidas alrededor del núcleo. Las órbitas están etiquetadas por un número entero, el número cuántico n. Los electrones pueden saltar de una órbita a otra emitiendo o absorbiendo energía.

The number of moles of C\(O_{2}\) formed during the reaction is 0.73 mol C\(O_{2}\).

What is Moles?

In chemistry, a mole is a unit of measurement that represents the amount of substance. It is used to quantify the number of entities (such as atoms, molecules, ions, or particles) in a given sample of a substance. The mole is defined as the amount of substance that contains the same number of entities as there are in 12 grams of carbon-12.

To determine the number of moles of C\(O_{2}\) formed during the given reaction, we can use the balanced chemical equation, which tells us the stoichiometry of the reaction.

The balanced chemical equation is:

2CO(g) + \(O_{2}\)(g) → 2C\(O_{2}\)(g)

From the equation, we can see that 2 moles of CO react with 1 mole of \(O_{2}\)to produce 2 moles of C\(O_{2}\).

Given that 9.0 L of \(O_{2}\)react at STP (Standard Temperature and Pressure), we can use the ideal gas law to find the number of moles of O2:

PV = nRT

where:

P = pressure (at STP, P = 1 atm)

V = volume (9.0 L)

n = number of moles of \(O_{2}\) (what we need to find)

R = ideal gas constant (0.0821 L atm / (mol K))

T = temperature (at STP, T = 273 K)

1 atm * 9.0 L = n * 0.0821 L atm / (mol K) * 273 K

Solving for n, we get:

n = (1 atm * 9.0 L) / (0.0821 L atm / (mol K) * 273 K)

n = 0.365 mol \(O_{2}\)

Since 1 mole of\(O_{2}\)reacts to produce 2 moles of C\(O_{2}\), we can multiply the number of moles of \(O_{2}\) by 2 to get the number of moles of C\(O_{2}\)formed:

0.365 mol O2 * 2 = 0.73 mol C\(O_{2}\)

Learn more about Moles from the given link

https://brainly.com/question/29367909

#SPJ1

To find ∆H for the reaction Fe₂O₃(s) + 2Al(s) → Al₂O₃(s) + 2Fe(s) using Hess's Law, we need to use the given reactions (a) and (b) and manipulate them to obtain the desired overall reaction.

Given:

a. 2Al(s) + 3/2O₂(g) → Al₂O₃(s); ∆H = -1675.7 kJ

b. 2Fe(s) + 3/2O₂(g) → Fe₂O₃(s); ∆H = -824.2 kJ

To match the stoichiometry of the desired reaction, we need to multiply reaction (a) by 2 and reaction (b) by 2:

2a. 4Al(s) + 3O₂(g) → 2Al₂O₃(s); ∆H = 2*(-1675.7 kJ) = -3351.4 kJ

2b. 4Fe(s) + 3O₂(g) → 2Fe₂O₃(s); ∆H = 2*(-824.2 kJ) = -1648.4 kJ

Now, we can add these manipulated reactions to obtain the desired overall reaction:

4Al(s) + 3O₂(g) + 4Fe(s) + 3O₂(g) → 2Al₂O₃(s) + 2Fe₂O₃(s)

To find the ∆H for the overall reaction, we add the ∆H values of the manipulated reactions:

∆H = (-3351.4 kJ) + (-1648.4 kJ) = -4999.8 kJ

Therefore, the ∆H for the reaction Fe₂O₃(s) + 2Al(s) → Al₂O₃(s) + 2Fe(s) using Hess's Law is -4999.8 kJ.

\(\huge{\mathfrak{\colorbox{black}{\textcolor{lime}{I\:hope\:this\:helps\:!\:\:}}}}\)

♥️ \(\large{\textcolor{red}{\underline{\mathcal{SUMIT\:\:ROY\:\:(:\:\:}}}}\)

Answer:

what do you mean?

Explanation:

Answer:

H2O: 100°C

N2O: -88.5°C

NaF: 1414°C

Explanation:

H2O is a covalent molecule with strong hydrogen bonds between its molecules, giving it a high boiling point.

N2O - Because N2O has a weaker intermolecular force than H2O, it has a lower boiling point.

NaF is an ionic compound with no covalent bonds, only electrostatic forces between its ions, and thus has the lowest boiling point of the three.

These compounds' boiling points are:

H2O: 100°C

N2O: -88.5°C

NaF: 1414°C

Answer:i forgor

Explanation:i dont remember

The variations which exist in the fundamental atomic theories result in our understanding of potassium cyanide in such away atoms of potassium and cyanide are rearranged to form the compound potassium cyanide.

It happens that from our understanding in the atomic theories, atoms of chemical elements which forms a substance are very much alike in all aspects in mass.

In the case of potassium cyanide, the atoms of potassium and cyanide which forms the compound unite in fixed ratios.

So therefore, when the atoms of potassium and cyanide are regrouped and combined in fixed ratios, it forms potassium cyanide ( KCN) according to the atomic theory.

Read more on atomic theory:

https://brainly.com/question/13157325

#SPJ1

The crash where the cone experience a stronger force is option D because: Crash 1: the force on the black hockey puck was stronger in this crash, so the force on the cone was also stronger.

The ball is drawn back to Earth by gravitational force. The ball returns to Earth as a result of friction. The ball is forced back toward Earth by magnetic force.

A puck's velocity changes when a player makes contact with it when it is still. He causes the puck to speed up, in other terms. The hockey stick's force, which causes the acceleration, is responsible. The velocity grows as long as this force is in motion.

Therefore, the force applied to an object must be larger than what is required for a progressive slowing down if the object must be slowed down quickly. For instance, a bicycle's brakes will slow or stop it more quickly the more force is given to it.

Learn more about Force from

https://brainly.com/question/12785175
#SPJ1

See full question below

After hockey practice, Carissa and Keenan were playing a game where they were pushing some objects to get them to crash. They were using a cone and two different pucks—a black one with more mass for Crash 1 and a blue one with less mass for Crash 2. They want to know what happened to the cone.

Use the information from the diagram to answer.

In which crash did the cone experience a stronger force? How do you know?

answer choices

There was no force on the cone. In both crashes, only the hockey puck experienced a force.

The diagram doesn’t tell you anything about the force on the cone. It only gives information about the force on the pucks.

It was the same force in both crashes; the hockey puck changed speed by the same amount in each crash, so the force on the cone was the same each time.

Crash 1; the force on the black hockey puck was stronger in this crash, so the force on the cone was also stronger.

Answer:

C.) The reaction would move to the left, producing more NH₄CI.

Explanation:

The chemical equation:

NH₄Cl ↔ NH₃ + HCl

If you were to increase the amount of HCl, the equilibrium would shift to the left. This is because the system is trying to go back to equilibrium. The equilibrium was disturbed when more product (HCl) was added. In order to restore equilibrium, you need to do the same thing that was done to the products to the reactants. In other words, since the products increased, the reactants need to increase.

Answer:

0.0872g

Explanation:

Since mg is smaller than g, you will have to multiply the mg by milli which is equal to 10⁻³.

87.2 × 10⁻³ = 0.0872 grams

A cup of coffee contains 87.2 mg of caffeine. The number of grams  present in the cup of coffee is 0.0872g.

Grams and milligrams are the measurement units that measure the amount or quantity of matter. It measures the solid mass and the quantity of matter. It is the SI unit of mass. There are seven units of measurement.

These units are Length - meter (m), Temperature - kelvin (K), amount of substance - mole (mole), Luminous intensity - candela (cd), Electric current - ampere (A), Mass - kilogram (kg), Time - second (s).

Here the mass of caffeine is asked in grams, which are given in milligrams.  

As we know, 1 gram is = 1000 milligrams.

0.0872g = 87.2 mg

Thus, the number of grams present in the cup of coffee is 0.0872g.

To learn more about grams and milligrams, refer to the link:

https://brainly.com/question/7354054

#SPJ2

To calculate the pH of very dilute solutions, simply taking the negative log of the concentration of substance put into solution is likely to give incorrect results if the concentration is less than \(10^-^7M\).

The calculation of pH of very dilute solutions is likely to give incorrect results because when we take the negative logarithm of the hydrogen ion concentration in a solution, we should have a minimum of \(10^-^7M\) hydrogen ion concentration to calculate the pH with. This is because pure water dissociates into \(10^-^7M\) hydrogen and hydroxide ions.

For any solution with a pH of 7 or greater, the hydrogen ion concentration is lower than \(10^-^7M\) . If we try to calculate the pH of a very dilute solution with hydrogen ion concentration less than \(10^-^7M\), then the pH value will be outside the range of 0 to 14, which is not possible.

Hence, this will give incorrect results. Therefore, it is necessary to use alternative methods such as diluting the solution with a solvent or using indicators.

To know more about concentration refer here :

https://brainly.com/question/4184101

#SPJ11

Answer:

no.

Explanation:

The excitation of electrons in the light reactions of photosynthesis generates energy for two key processes:

a) the synthesis of ATP  

d) the reduction of \(NADP^{+}\) to NADPH.

During the light reactions of photosynthesis, light energy is absorbed by chlorophyll molecules in the thylakoid membranes of chloroplasts. This excites the electrons within the chlorophyll molecules, initiating a series of electron transfer reactions. The primary outcome of these electron transfers is the generation of energy-rich molecules ATP (adenosine triphosphate) and NADPH (nicotinamide adenine dinucleotide phosphate).

a) The excitation of electrons drives the synthesis of ATP through a process called photophosphorylation. As the excited electrons move through the electron transport chain, they release energy that is utilized by ATP synthase to convert ADP (adenosine diphosphate) and inorganic phosphate (\(P_{i}\)) into ATP.

d) The excitation of electrons also leads to the reduction of \(NADP^{+}\) to NADPH. The energized electrons are passed through a series of electron carriers and eventually transferred to \(NADP^{+}\), along with protons (\(H^{+}\)). This reduction reaction converts \(NADP^{+}\) into NADPH, which acts as a high-energy electron carrier used in the subsequent dark reactions (Calvin cycle) to fix carbon dioxide and synthesize carbohydrates.

Thus, the excitation of electrons in the light reactions of photosynthesis provides energy for the synthesis of ATP through photophosphorylation and the reduction of \(NADP^{+}\) to NADPH. These energy-rich molecules are crucial for powering the subsequent dark reactions and the fixation of carbon dioxide to produce carbohydrates.

Learn more about reactions here:

https://brainly.com/question/28270550

#SPJ11

Answer:

\(\large \boxed{\text{0.88 L}}\)

Explanation:

The temperature and amount of gas are constant, so we can use Boyle’s Law.

\(p_{1}V_{1} = p_{2}V_{2}\)

Data:

\(\begin{array}{rcrrcl}p_{1}& =& \text{1.34 atm}\qquad & V_{1} &= & \text{ 0.56 L} \\p_{2}& =& \text{0.85 atm}\qquad & V_{2} &= & ?\\\end{array}\)

Calculations:  

\(\begin{array}{rcl}\text{1.34 atm} \times \text{0.56 L} & =& \text{0.85 atm} \times V_{2}\\\text{0.750 L} & = & 0.85V_{2}\\V_{2} & = &\dfrac{0.750}{0.85}\\\\& = &\textbf{0.88 L}\\\end{array}\\\text{The balloon's new volume is $ \large \boxed{\textbf{0.88 L}}$}\)

the answer is the third one

Explanation:

it just is I think