Calculate the pH during the titration of 40.00 mL of 0.1000 M HCl with 0.1000 M NaOH solution after the following additions of base:(f) 40.10 mL

The statement that compares the strengths of electric forces between particlesof matter is Hydrogen bonds and metallic bonds are weaker than ionic bonds.

Electric forces are strong forces or power that exist between atoms of molecules which help to bind those are together and allow the flow of electric charges.

Therefore, statement that compares the strengths of electric forces between particlesof matter is Hydrogen bonds and metallic bonds are weaker than ionic bonds.

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Answer:

Because it lose detectable mass.

Explanation:

Law of conservation of mass states that substances involved in chemical reaction do not lose or gain any mass. So the above reactions don't demonstrate the law of conservation of mass because it lose mass

Answer:

Convection 

is the movement of heat by a fluid such as water or air. The fluid (liquid or gas) moves from one location to another, transferring heat along with it. This movement of a mass of heated water or air is called a current. Radiation is the transfer of heat by electromagnetic waves.

Answer:

The question is incomplete, the complete question is:

A certain substance X has a normal freezing point of  and a molal freezing point depression constant . A solution is prepared by dissolving some glycine in 950. g of X. This solution freezes at  . Calculate the mass of urea that was dissolved. Round your answer to 2 significant digits.

Answer: The mass of glycine that can be dissolved is

Explanation:

Depression in the freezing point is defined as the difference between the freezing point of the pure solvent and the freezing point of the solution.

The expression for the calculation of depression in freezing point is:

OR

          ......(1)

where,

Freezing point of pure solvent =

Freezing point of solution =

i = Vant Hoff factor = 1 (for non-electrolytes)

= freezing point depression constant =

= Given mass of solute (glycine) = ?

= Molar mass of solute (glycine) = 75.07 g/mol

= Mass of solvent = 950. g

Putting values in equation 1, we get:

Hence, the mass of glycine that can be dissolved is

Answer:

92.1

Explanation:

1.57 * 58.69

Explanation:

Distinguish chemical substances from mixtures

Key Points

Matter can be broken down into two categories: pure substances and mixtures. Pure substances are further broken down into elements and compounds. Mixtures are physically combined structures that can be separated into their original components.

A chemical substance is composed of one type of atom or molecule.

A mixture is composed of different types of atoms or molecules that are not chemically bonded.

A heterogeneous mixture is a mixture of two or more chemical substances where the various components can be visually distinguished.

A homogeneous mixture is a type of mixture in which the composition is uniform and every part of the solution has the same properties.

Various separation techniques exist in order to separate matter, including include distillation, filtration, evaporation and chromatography. Matter can be in the same phase or in two different phases for this separation to take place.

Terms

substanceA form of matter that has constant chemical composition and characteristic properties. It is composed of one type of atom or molecule.

elementA chemical substance that is made up of a particular kind of atom and cannot be broken down or transformed by a chemical reaction.

mixtureSomething that consists of diverse, non-bonded elements or molecules.

Answer:

a pure substance made up of only one kind

Explanation:

Answer: Ionic attractions

Explanation:

Ionic bonding is a type of chemical bond that involves the electrostatic attraction between oppositely charged ions.

Answer:

use wire nettings

Explanation:

and cages

Answer:

0.1 moles of N2 will react with 0.3034 moles of Mg.

Explanation:

\(\sf{balanced \ eqaution = 3Mg + N2 \rightarrow Mg3N2}\)

using molar ratio:

3Mg : N2

3 : 1

moles of N2:

\(\hookrightarrow \sf\frac{0.3034 }{3} *1\)

\(\hookrightarrow \sf 0.10113 \ moles \ of \ N2\)

Therefore, 50 mL of distilled water must be added to 0.5 mL of 0.1 M FeCl₃ to make it 0.001 M FeCl₃.

Distilled water is a type of purified water that has gone through a process of distillation, which involves boiling water and then condensing the steam into a separate container. This process removes impurities and minerals from the water, resulting in a very pure form of water. Distilled water is often used in laboratory experiments and medical procedures where purity is important. It can also be used in household appliances, such as irons and humidifiers, to prevent mineral buildup that can lead to damage or decreased performance.

Here,

To calculate the amount of distilled water that must be added to 0.5 mL of 0.1 M FeCl₃ to make it 0.001 M FeCl₃, we can use the dilution formula:

M1 x V1 = M2 x V2

where M1 is the initial concentration, V1 is the initial volume, M2 is the final concentration, and V2 is the final volume.

We can rearrange this formula to solve for V2, which represents the volume of water that must be added:

V2 = (M1 x V1) / M2

Plugging in the values we have:

M1 = 0.1 M (the initial concentration)

V1 = 0.5 mL (the initial volume)

M2 = 0.001 M (the final concentration)

V2 = unknown (the volume of water to be added)

V2 = (0.1 M x 0.5 mL) / 0.001 M

V2 = 50 mL

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Answer:

Answer is 9.2 grams

Explanation:

Molar mass of ethanol

\({ \bf{CH _{3}CH_{2}OH}} = (12 \times 2) + (6 \times 1) + (16) \\ = 46 \: g\)

for moles:

\({ \sf{1 \: mole \: of \: ethanol \: weighs \: 46 \: g}} \\ { \sf{0.2 \: moles \: weigh \: (0.2 \times 46) \: g}} \\ = 9.2 \: g\)

Answer:

C2H3O2 (acetate)

Explanation:

61.05 g C x 1 mol C / 12.01 g C = 5.083 mol C

7.65 g H x 1 mol H / 1.01 g H = 7.57 mol H

81.30 g O x 1 mol O / 16.00 g O = 5.081 mol O

Divide by lowest number

5.083 / 5.081 = approx. 1 mol C

7.57 / 5.081 = approx. 1.5 mol H

5.081 / 5.081 = 1 mol O

so ratio of moles in this compound are 1 mol C : 1.5 mol H : 1 mol O

Multiply by 2 to get whole number mol ratios

--> empirical formula is C2H3O2 (acetate)

The unidentified compound's weight in the recipe is To find the fraction, divide the percentage by 100. 63.55 divided by the fraction equals the molecular weight. 225.4 atomic units.

It is utilized in pyrotechnics, pyrolysis, anti-fouling coatings, flame proofing, printing, photocopying, and electrolysis operations. The atomic number 29 and chemical symbol Cu are assigned to the element copper.

Cu2O, Cu2Cl2, and cuprous sulfide are a few of the significant commercial compounds of copper(I) (Cu2S). The mineral cuprite, which contains cuprous oxide as a reddish brown or red crystal or powder, naturally occurs.

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One way to reduce the gassiness which is associated with eating legumes is to soak them in water overnight before cooking.

Soaking helps to remove some of the indigestible sugars and oligosaccharides present in legumes, which are the primary cause of flatulence. It is also important to change the soaking water at least once to remove any of the water-soluble compounds that are responsible for causing gas.

Additionally, adding herbs and spices like cumin, fennel, ginger, and asafoetida to the cooking process may also help to reduce flatulence. Finally, slowly increasing the amount of legumes in the diet over time can also help to reduce gas, as the body gradually adjusts to the increased fiber and oligosaccharide intake.

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The container should be filled with several hundred particles. From the hold constant menu, pick temperature.

Following are the many R values: R is equal to 0.0821 liter•atm/molK. R is equal to 62.3637 lb/mol K or lb/mmHg/mol K. Atm, Torr, and mmHg are the different pressure units used here. Liters (L), Kelvin (K), and moles (mol) are the units for volume, temperature, and moles, respectively. When different pressures are applied and stated in various units, the value of R changes. offered here, Speed Vo, R - Distance from the Earth's centre. Force applied to the satellite, tangential speed, or vT. Gravitational force (Fg) is equal to centripetal force for satellites (Fc), Fc = Fo = Fg. GM = (v0)²R..................... (1) (1). Considering that satellite R = 3R.

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A car engine produces 604 kJ of mechanical energy from fuel capable of producing 2416 kJ of energy, then efficiency of the engine is 25%.

We can calculate the efficiency by using the below equation as:

Efficiency = (Actual production / Theoretical production) × 100%

Given that,

Actual production = 604 kJ

Theoretical production = 2,416 kJ

On putting values in given equation, we get

Efficiency = (604/2,416) × 100% = 25%

Hence efficiency of the engine is 25%.

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Answer:

All animals, all fungi, and some kinds of bacteria are heterotrophs and consumers

Explanation:

The compound is polar and the compound is T shaped.

We know that the Lewis structure of a compound tells us the way that electrons are arranged around a central atom in a compound. We can see that the Lewis structure would consist of the central atom and then the atoms that are surrounding the central atom of the molecule.

In any case, the valence electrons that surround each of the atoms in the compound would be shown as dots and they would surround the symbol of the elements to  which the atoms belong. We can now look up at the structure and be able to deduce what the compound can be able to look like.

The compound as shown is polar because of the fact that he compound is non symmetrical.

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The mole fraction of NH₃ in the solution is 0.076. The mole fraction is a way of expressing the concentration of a component in a solution. It is defined as the number of moles of a particular component divided by the total number of moles in the solution.

To determine the mole fraction of  NH₃ in the solution, we need to first calculate the total mass of the solution.

Total mass of solution = mass of  NH₃ + mass of water

Total mass of solution = 15.0g + 250g

Total mass of solution = 265.0g

Next, we can use the density of the solution to calculate its volume:

Density = mass/volume

0.974 g/ml = 265.0g/volume

Volume = 272.11 ml

Now we can use the mass of  NH₃ and the total volume of the solution to calculate the mole fraction of  NH₃:

Mole fraction of  NH₃= moles of  NH₃/total moles in solution

To find the moles of  NH₃, we need to first convert the mass of  NH₃ to moles using its molar mass:

Molar mass of  NH₃ = 14.01 g/mol

Moles of  NH₃= 15.0g / 14.01 g/mol

Moles of  NH₃= 1.07 mol

To find the total moles in the solution, we need to use the density and the molar volume of water (which is 18.02 mL/mol at room temperature and pressure):

Volume of water = total volume - volume of  NH₃

Volume of water = 272.11 ml - (15.0g / 1.00 g/ml)

Volume of water = 257.11 ml

Total moles in solution = (257.11 ml / 1000 ml/L) * (1 L/1000 ml) * (1 mol/18.02 L)

Total moles in solution = 0.014 mol

Now we can calculate the mole fraction of  NH₃:

Mole fraction of  NH₃= 1.07 mol / 0.014 mol

Mole fraction of  NH₃= 0.076

Therefore, the mole fraction of  NH₃ in the solution is 0.076.

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The reactant with the most initial moles is SULFUR with its chemical formula being S; the reactant with the least initial moles is METHANE with its chemical formula being CH₄; and the limiting reactant is methane with its chemical formula being CH₄.

The reaction is CH₄ + 4S → CS₂ + 2H₂S

To determine which reactant has the most initial moles, we need to compare the coefficients of the balanced equation.

To determine which reactant has the least initial moles, we again compare the coefficients of the balanced equation.

To determine the limiting reactant, we need to compare the amount of product that can be formed from each reactant. We will use the mole ratio from the balanced equation to do this. The molar ratio relates to the number of moles of any two substances in a chemical reaction.

According to the image below, there are 10 moles of S and 2 moles of CH₄.

Using the given amounts of each reactant, we can calculate the maximum amount of product that can be formed using each reactant.

In this case, the maximum amount of CS₂ that can be formed is limited by the amount of CH₄ (2 moles), so CH₄ is the limiting reactant. Therefore, the reactant that is the limiting reactant is CH₄.

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An example of an electrocyclic reaction is the Diels-Alder reaction. New σ-bonds, that are energetically higher stable than that of the π-bonds, are formed during this reaction.

A conjugated diene & an alkene (dienophile) react to generate unsaturated six-membered rings in the Diels-Alder reaction. The reaction is also known as a "cycloaddition" because it results in the production of such a cyclic product through a cyclic transition state.

Because it is created whenever the electron-withdrawing group of the dienophile are facing in the direction of the electrons of the diene, endo is typically the main result.

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Answer:

Compaction and Cementation

Dissolved minerals in the ground water precipitate (crystallize) from water in the pore spaces forming mineral crusts on the sedimentary grains, gradually cementing the sediments, thus forming a rock

There is no answer, science is about empirical knowledge, technology is the sum of techniques, skills, methods, and processes. I do not believe that you will find a answer for that.

Answer:

multiple things.

Explanation:

DNA evidence collected from a crime scene can be linked to a suspect or can eliminate a suspect from suspicion. During a sexual assault, for example, biological evidence such as hair, skin cells, semen, or blood can be left on the victim's body or other parts of the crime scene.

Answer:

I think it is just a

Explanation:

Answer:

D

Explanation:

no water fjkdbksfjgnkfjgdkufgkjdfghkdfjhdgfg

Process that is spontaneous is : d) mixture of two gases separating into pure compounds.

In thermodynamics, spontaneous process is that process which occurs without any external input to the system. A more technical definition can be the time-evolution of a system in which it releases free energy and moves to a lower, more thermodynamically stable energy state.

We can assess the spontaneity of  process by calculating entropy change of the universe. If ΔSuniv is positive, then we can say that the process is spontaneous. As spontaneous processes are characterized by decrease in  system's free energy, they do not need to be driven by an outside source of energy.

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