Answer the four questions to figure out the four digit code

40 ml of the NaOH is required to reach the equivalence point, if you start with 1 m NaOH and 40 ml of 1 m acetic acid.

The molarity of a substance refers to how much of it is present in a given volume of solution (M). Molarity is the measure of the amount of solute per liter of solution. Molarity is also referred to as a solution's molar concentration.

Let the volume of NaOH is V ml.

molarity of NaOH (M₁) is 1 m.

Moles of NaOH(n₁) = molarity × volume

n₁ = 1 × V

n₁ = V mmol

Molarity of CH₃COOH (acetic acid) is 1M

Volume of  CH₃COOH is 40ml.

moles of CH₃COOH = 40 × 1

moles of CH₃COOH = 40 mmol

Reaction:

NaOH (aq) + CH₃COOH(aq) → CH₃COO⁻Na⁺(s) + H₂O

At equivalent point:

moles of acid = moles of base

moles of CH₃COOH = moles of NaOH

40 mml = V mml

∴ V= 40 ml

NaOH required is 40 ml.

To know more about molarity, visit:

https://brainly.com/question/8732513

#SPJ4

The total pressure inside the container is 1.167 atm.

According to Dalton's law of partial pressures, the total pressure of a mixture of gases is equal to the sum of the partial pressures of each of the constituent of the gases. The partial pressure is defined as the pressure each gas would exert if it alone occupied the volume of the mixture at the same temperature.

we can calculate the contribution of different gases in a mixture to the total pressure. We refer to the pressure exerted by a specific gas in a mixture as its partial pressure. The partial pressure of a gas can generally be calculated using the ideal gas law.

According to daltons law of partial pressure

[tex]P_{total}[/tex] = [tex]P_{1}[/tex] + [tex]P_{2}[/tex]

we know that 760mm Hg is equal to 1atm

So, 401mm Hg will have = 401 ÷ 760 ⇒ 0.527 atm

Hence , [tex]P_{total}[/tex] = 0.527 + 0.639 ⇒ 1.166 atm

To know about total pressure

https://brainly.com/question/16665850

#SPJ4

The stars and the constellations in the sky appear to change positions throughout the night and throughout the year because earth's orbit around our sun .

A constellation is a group of stars. star appear to form a pattern. The star are distant object. the earth's rotate on its axis , as earth's rotate the stars appear to move. from east to west. We observed throughout the year the constellation shift to west gradually. This is because earth's orbit around our sun.

Thus, The stars and the constellations in the sky appear to change positions throughout the night and throughout the year because earth's orbit around our sun .

To learn more about stars and constellation here

https://brainly.com/question/28222132

#SPJ1

More than 400 chemical components make up the complex plant known as cannabis, more than 60 of which are cannabinoid chemicals, some of which have antagonistic effects.

Cannabinoid receptors are primarily found in the brain, and cannabinoids are a class of chemicals that interact with these receptors. Hallucinations may result from them, and an overdose may result in serious health issues. The Cannabis sativa plant's inflorescences are where one finds the naturally occurring cannabinoids.

There is no nitrogen in cannabinoids; instead, they include aromatic oxygenated hydrocarbons. The primary psychoactive effects of numerous pharmaceutical drugs are mostly attributed to the cannabinoid δ9-thc.

To know more about cannabinoids visit:

https://brainly.com/question/22685604

#SPJ4

The molecular formula for this given hydrocarbon is C6H6. IUPAC:- (n-hexyne).

To find the molecular formula, we first need to figure out the molar mass of the compound. Moving ahead, we need to know the mass of the molecule which can be calculated using the ideal gas equation. Assuming we do have 1 liter and 2.550 grams and the pressure is 760mmhg which is equal to 1atm. Divide the pressure and the volume by the gas constant and the Temperature (in kelvin) which equals to the number of moles. Now you have the number of moles and the mass of the compound (2.550grms) through which you can find the molar mass of the compound which is 78g/mol. We know that molar mass of carbon is 12g/mol and 1g/mol for hydrogen by which we can assume the molecular formula will have 6 carbon and 6 hydrogen. So the molecular formula for this compound is C6H6.

To know more about Molecular Formula, visit:

https://brainly.com/question/28647690

#SPJ4

The most closely related characteristic of barium to its chemical reactivity is its high ionization energy.

Does barium have a high reactivity?

To learn more about barium, follow the link https://brainly.com/question/6034926

#SPJ4

The property best accounts for the conductivity of metals is the free electrons in the valence level.

The metal conduct the electricity because of the free electrons on the valence energy levels. The conductivity is due to the free electrons. metal which have the highest conductivity is silver . the metal which has lower conductivity us aluminum. conductivity is defined as the measurement of the current that how it flow through a substance.  the si unit of the conductivity is siemens per meter.

Thus, The property best accounts for the conductivity of metals is the free electrons in the valence level.

To learn more about conductivity here

https://brainly.com/question/21496559

#SPJ4

It should be diluted to 1 litre from 0.2 litre.

What is molarity?

A solution is a chemical mixture of two or more substances in which neither substance changes chemically. For instance, salt water is a solution composed of water (the solvent) and salt (the solute). The concentration of a solution is the amount of dissolved ingredient. In other words, it refers to how much things has been blended into your beverage. Molarity is the standard unit of concentration.

The number of moles of a solute per litre of solution is referred to as molarity. We'd want to know how many moles of salt are in 1 litre of water if we wanted to determine the molarity of our saltwater solution.

Initially moles of NaOH = molarity * volume in litres

                                = 0.2 * 15 M = 3 moles

Now final molarity = 3 M

So volume = moles/ molarity of solution = 3/3 = 1 litre.

So it should be diluted to 1 litre from 0.2 litre.

Learn more about molarity from given link

https://brainly.com/question/17138838

#SPJ4

For the burning of sugar, there is a molar internal energy change. For a comb calorimeter, w=0 because Delta V=0 and Delta E=q+w. So Delta

E = q.

Water may absorb a lot of heat energy because of its large specific heat capacity without boiling or even significantly changing its temperature. Water is a useful medium for heat exchange in calorimetry because of this.

Heat transfer rates to or from a substance are measured using calorimetry. Heat is transferred to do this using a calibrated item (calorimeter). Calculating the quantity of heat transmitted by the process under study requires using the temperature change recorded by the calorimeter.

To know more about calorimeter visit:

https://brainly.com/question/4802333

#SPJ4

The 40 Ohm resistors eventually lose 8.9% of the initial energy that was stored in the Inductor. Electrical component with two terminals that is passive and stores energy in its magnetic field.

The ideal inductor receives electrical energy from the source at a rate of p = Ei. Inductance, unlike resistance, is unable to transform this energy into heat or light.

The magnetic field's stored energy is constant when the current is stable. Although the inductance of the real-world inductors doesn't store any extra energy.

To know more about Inductor visit:-

brainly.com/question/14262806

#SPJ4

Answer:

There are 92 elements that make up everything we know and love.

Explanation:

The metal is heated in a dry test tube to measure the capacity of the metal.

Metals are a class of materials characterized by high electrical and thermal conductivity, as well as malleability, ductility, and high light reflectance.

About three-quarters of known chemical elements are metals. The most common types found in the Earth's crust are aluminum, iron, calcium, sodium, potassium, and magnesium. The majority of metals are found in ores (substances containing minerals), but some, such as copper, gold, platinum, and silver, are commonly found in the free state because they do not react easily with other elements. .

When doing chemistry experiments it is important to have:

When heated with boiling water, the metal cools and the water heats up over time. After all, the two objects have the same temperature. They are then in thermal equilibrium with each other. Hot metal, on the other hand, releases energy into the water.

To know more about metals visit:

https://brainly.com/question/28931986

#SPJ4

The organization and motion of particles within a substance are modeled by the particle theory of matter. The model is used to describe how gases, liquids, and solids behave physically. Arrangement and motion of particles.

When anything has a testing as well as a predetermined set of properties, it is said to be a substance. A substance would be any chemical unit or chemical class. Physically, a substance cannot be split. A pure substance's structural characteristics are constant. It included sugar and minerals like iron.

Pure substances are those that contain only one type of particle and are devoid of any mixtures. Metals such as iron, aluminium, silver, and gold are examples of pure substances.

To know more about Substance visit:

https://brainly.com/question/8242848

#SPJ1

Hydrogen bond in H2O is the strongest intermolecular force.

What is intermolecular force?

Intermolecular forces are those that form between a substance's molecules and have the ability to attract and repel one another. All the physical and chemical properties depend on the type of intermolecular force present in the matter.

Dipole-Dipole Interactions

Ion-Dipole Interactions

Ion Induced Dipole Interactions

Dipole Induced Dipole Interaction

Dispersion Forces or London Forces.

These above are the five types of Intermolecular forces-

The order of the Intermolecular forces where

Ion-dipole force is the strongest

Hydrogen bond

Dipole-dipole force

and dispersion force is the weakest.

Hence, the Hydrogen bond present in H2O is the strongest intermolecular force.

To know more about Intermolecular force, follow the link below

https://brainly.com/question/2193457

#SPJ4

The strongest intermolecular force is the hydrogen bond in water (H2O).

What is intermolecular force?
Intermolecular forces are those that develop between the molecules of a substance and can cause them to attract or repel one another. The type of intermolecular force that is present in the matter determines all of the material's physical and chemical properties.

Interactions between dipoles
Involvements of Ion-Dipoles
Dipole Interactions Induced by Ions
DID Interaction: Dipole Induced DID
London Forces or Dispersion Forces
These five intermolecular force types are listed above.

The intermolecular forces were in this order:
The strongest force is ion-dipole force.
the hydrogen bond
Force between dipoles
the least powerful is the dispersion force.
The strongest intermolecular force is therefore the hydrogen bond in H2O.

To know more about Intermolecular force, follow the link below
brainly.com/question/2193457
#SPJ4

When transferring flammable liquids from storage drums to smaller electrically conductive containers, bonding and grounding are required. In any workplace, you should do the same whenever you move these liquids between conductive containers.

Ground dispensing drums in the area for storing and dispensing flammable liquids. Connecting the container to an already grounded, electrically conductive object grounds it. This could be a grounded metal construction framework, a buried metal plate, a metallic subsurface gas piping system, or metal water pipes. Sparks are prevented from discharging by bonding the two containers together and grounding one of them. All connections for bonding and grounding must be made from bare metal to bare metal.

To know more about Flammable liquids, visit-https://brainly.com/question/3702349

#SPJ4

The number of  molecules of lactate can be produced from one molecular of glucose through glycolysis and lactate acid fermentation is two molecules of lactate.

Fermentation is the way of breaking down glucose . In the fermentation the only way is glycolysis. six moles of pyruvate generated the two lactate molecules. fermentation is anaerobic process that allow glycolysis to break down glucose into the pyruvate. during fermentation of lactic acid  by the anaerobic process two  molecules of ATP are produced.

Thus, The number of  molecules of lactate can be produced from one molecular of glucose through glycolysis and lactate acid fermentation is two molecules of lactate.

To learn more about acid fermentation here

https://brainly.com/question/11502989

#SPJ4

Answer:

wood run out and anothers don't runout ithink i am right

Active series ions with the highest reactivity among metals.

The simplicity of chemical reactions is the main difference between metals. The most active metals in terms of reactivity are those in the lower left corner of the periodic table. For example, water reacts with lithium, sodium and potassium. However, as you move down this pillar, the more metallic the elements become, the more reactive they become, thus accelerating the rate of this reaction.

The order in which metals are arranged in descending order of reactivity is called the reaction sequence or activity sequence of metals.

The list of active or electromotive series metals is arranged in order of increasing reactivity with hydrogen ion sources such as water and acids.

To know more about activity series visit:

https://brainly.com/question/14129976

#SPJ4

The partial pressure of nitrogen gas if the total pressure is 800 mmHg when collected over water at a temperature of 50° Celcius is 707.5 mmHg

The partial pressure of water vapor at 50 ° Celcius is 92.5 mmHg

The total pressure is 800 mmHg.

Substituting this value in the formula:

[tex]P_{total}[/tex] = [tex]P_{nitrogen} + P_{water}[/tex]

800= [tex]P_{nitrogen}[/tex] + 92.5

[tex]P_{nitrogen}[/tex]= 800- 92.5

[tex]P_{nitrogen}[/tex]= 707.5 mmHg

When there is a combination of two or more gases in a given volume, the pressure created by each individual gas in the mixture is expressed using the phrase partial pressure. The partial pressures of the individual gases make up the total pressure of the gas combination. Ptotal = Pi = P1 + P2+P3+ Pn

For more information on partial pressure kindly visit to

https://brainly.com/question/13199169

#SPJ4

The intermolecular interactions between water molecules are greater than those between ammonia molecules.

In a certain state of matter, substances are bound together by intermolecular forces. Three different states of matter exist;

Solid, sLiquid, sGas .

The level of intermolecular contact between molecules is greatest when matter is solid. Liquid states have weaker intermolecular interactions, while gaseous states have the weakest intermolecular contacts.

Since ammonia is a gas at room temperature, its molecules interact with one another less strongly than those of water at the same temperature.

To know more about ammonia visit:-

https://brainly.com/question/15409518

#SPJ4

Cancer treatment acts as evidence from "Marie curie and the discovery of radioactivity" best supports the idea that radium is helpful to humans.

Because radiation became the most efficient and safest approach to cure cancer after Marie Curie's discovery because it inhibited the growth of cancer cells and was less invasive than surgery, radium was considered safer and more effective than surgery or the chemicals used to treat cancer at the time.

The discovery of polonium and radium, two naturally radioactive elements, attracted headlines, but Marie Curie's true discovery was that atoms were not little, solid balls and that there must be even smaller particles inside of them. This finding paved the way for all atomic and subatomic studies as well as atom splitting.

Learn more about discovery of radioactivity here:

https://brainly.com/question/17933655

#SPJ4

Gases consist of weakly bonded atoms with no long-range periodicity; gases expand to fill any available space. Liquids have properties intermediate between.

M_{per}=52.86

W_{per}=47.14

What is the liquid mixture?

First mixture:

40 wt% methanol=60 wt% water 200 kg

m_{met1}=200 kg * 0.4=80 kg

m_{wat1}=200 kg * 0.6=120 kg

Second mixture:

70 wt% methanol=30 wt% water 150 kg

m_{met2}=150 kg * 0.7=105 kg

m_{wat2}=150 kg * 0.3=45 kg

Final mixture:

m_{metF}=80 kg + 105 kg=185 kg

m_{watF}=120 kg + 45 = 165 kg

M_{per}=\frac{185 kg}{185 kg +165 kg}*100=52.86

W_{per}=\frac{165 kg}{185 kg +165 kg}*100=47.14

if,the compositions are constant,the only variables are the mass of each mixture used in the final one, So there can be only one independent balance.

learn more about a liquid mixture at,

https://brainly.com/question/14266199?

#SPJ4

The kind of chemical catalysis is covalent catalysis and among the given amino acids lysine will act as a catalyst for the reaction.

The generation of iminium ions in the transition state of the reaction confirms that it is a covalent catalysis. lysine is the only amino acid that can catalyze the iminium ion generated in the transition state of the reaction.

So the answer for the type of catalysis is covalent catalysis, and the answer for the type of amino acid among the given amino acids that can catalyze the reaction is lysine.

Complete question: (Reaction is attached as a picture)

You can also learn about chemical catalysis from the following question:

https://brainly.com/question/13553173

#SPJ4

The differences in atomic structure of diamond and graphite affect physical properties of each mineral like graphite has less density as compared to diamond.

The diamond and graphite is allotropes of carbon. The structure of diamond is tetrahedron structure.  The carbon atom in diamond structure is sp³ hybridizes. the bond length in carbon and carbon atom are equal in length. The diamond have high density. The structure  of graphite is forming the hexagonal ring. the carbon atom in graphite is sp² hybridizes. The graphite has lower density and low electrical conductivity.

Thus, The differences in atomic structure of diamond and graphite affect physical properties of each mineral like graphite has less density as compared to diamond.

To learn more about diamond and graphite here

https://brainly.com/question/22856672

#SPJ4

Polar solvents make it simple to elute polar chemicals because they cause them to readily dissociate and then reassociate with them.

Solvents that are not polar can dissolve non-polar substances. Based on the idea that "like dissolves like," this. As a result, the ionic substance sodium chloride is soluble in water (polar solvent). Toluene can dissolve the non-polar chemical naphthalene (non-polar solvent).

To elute a column, many increasingly polar solvent solutions are frequently utilized. A less polar chemical is initially eluted with a less polar solvent. A more polar solvent is added to the column after the less polar compound has been removed in order to elute the more polar compound.

To know more about  polar and nonpolar compounds visit:-

https://brainly.com/question/12878556

#SPJ4

A colorimeter is an instrument used to measure the amount of light absorbed by a solution. This absorbance is proportional to the concentration of the solute in solution.

A colorimeter is a photosensitive device used to measure the transmission and absorption of light through liquid samples. Colorimetric devices also measure the intensity or concentration of color produced when a particular reagent is introduced into a solution. The

colorimeter is based on his two basic laws of photometry.

Beer's Law: This law states that the amount of light absorbed is always proportional to the concentration of dissolved substances in solution.

Log10 Io/It = asC

where 'C' is the concentration of the solution and 'as' is the absorption index.

Lambert's law: A = log10 Io/It = asb ,

"as" is standard absorbance, "A" is test absorbance, "b" is solution thickness/length. The disappearance of transitions depends on two extrinsic assumptions. The absorbance is directly proportional to the concentration (c) of the sample solution used in the experiment. Absorbance is directly proportional to the optical path length (l).

To learn more about Colorimeter instrument, refer:

https://brainly.com/question/6568414?utm

#SPJ4

the concentration (in molarity) of the diluted acetic acid, solution is 0.75 M

the molarity can be calculate as follows:

Generally, the equation for Molarity  is  mathematically given as

M = n X V

M =   W   X 1000

        MW       mL

where M represent molarity

W represent mass( weight)

MW represent molecular weight

MW CH3COOH = (2 x Ar C) + (4 x Ar H) + (2 x Ar O) = ((2 x 12.0107) + (4 x 1.00794) + (2 x 15.9994)) gram/mol = (24 + 4 + 32) gram/mol = 60.05 gram/mol

Therefore,

M =   W   X 1000

        MW       mL

M =   4.5   X 1000

       60.05     100

M = 0.75 M

therefore, the concentration(in molarity) of diluted acetic acid, solution is 0.75 M

Read more about molarity  

brainly.com/question/2817451

#SPJ4

Answer:

Orbitals

Explanation:

Period number directly correlates to how many orbitals a given element has. For instance, Period 1 will have 1 orbital, whereas Period 7 will have 7 orbitals

The percentage of 69Ga  is 60% while that of 71Ga is 40%.

We know that an element is composed of atoms that have different isotopes and the percentage abundance of each of the isotopes of the elements is  not the same.

Let the percentage abundance of  69Ga  be x and that of 71Ga be 1 -x. The relative atomic mass of gallium is obtained from;

69.723 = 68.925581x + 70.924707(1 - x)

69.723 = 68.925581x + 70.924707 -  70.924707 x

69.723 - 70.924707 =  68.925581x - 70.924707 x

-1.2 = -1.99x

x = 1.2/1.99

x = 0.60

Thus the percentage abundance of the 69Ga = 60% and that of 71Ga = 40%

Learn more about percentage abundance:https://brainly.com/question/11587351

#SPJ1