What is the experimental quanity that serves as a measure of resistance to flow of a liquid?

The pressure obtained when the temperature is raised to 50 degrees celsius is 135.5 KPa

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

The final pressure can be obtained as illustrated below:

P₁V₁ / T₁ = P₂V₂ / T₂

Since the volume is constant, we have:

P₁ / T₁ = P₂ / T₂

125 / 298 = P₂ / 323

Cross multiply

298 × P₂ = 125 × 323

Divide both side by 298

P₂ = (125 × 323) / 298

P₂ = 135.5 KPa

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5.4 × 10¹⁴ Jules of energy is produced.

Mass defect is the difference between the mass of a composite particle and the sum of the masses of its parts.

The mass defect can be explained using Albert Einstein's formula E = mc².

E is the energy in joules.

m is the mass defect in kilograms.

c is the velocity of light in metres per second (3.00 x 10⁸ m/s).

m = 0.0060 kg

E = 0.0060 kg × (3.00 x 10⁸ m/s)²

E = 5.4 × 10¹⁴ J

Average binding energy per nucleon equals total binding energy divided by mass number (sum of protons and neutrons in an atom).

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The central atom of ICl2- has three lone pairs in the Lewis structure.

Lewis structures, also known as Lewis dot formulas, Lewis dot structures, electron dot structures, or Lewis electron dot structures (LEDs), are diagrams that show the covalent bonds that connect atoms in a molecule as well as any lone electron pairs that may be present. Any covalently bonded molecule, as well as coordination compounds, can be given a Lewis structure. Gilbert N. Lewis, who proposed the Lewis structure in his 1916 article The Atom and the Molecule, was named after it. Lewis structures extend the concept of the electron dot diagram by drawing lines between atoms to represent shared pairs in a chemical bond.

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Answer:

What is the valency of elements in the group 'v' of the modern periodic table?

Answer: -3

What is the reasons for the fact that reactivity of group 'v' elements decrease as we go down in the group? ​

Answer: On moving down the group, there is a decrease in the electron affinity of elements. It is because, as the size of an atom increases, the valence electrons get further away from its nucleus. Thus, the attraction between them decreases.

Select the product or products formed by the proton transfer reaction that occurs when these two substances interact: Arrhenius acids.

Communication between two or more computer applications is made possible via application programming interfaces (APIs). It is a kind of software interface that provides a service to other software. An API specification is a document or a standard that outlines how to create or use a connection or interface of this type. The term "implement" or "expose" refers to a computer system that conforms to this standard. A specification or an implementation may both be referred to as an API.

An application programming interface, as opposed to a user interface, links computer systems to people, while a user interface does the opposite.

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Mass of the block of wood = 3.25 cm

Density of the block of wood = 0.945 g/ cm³

The mass of Al₂S₃ in kg required is 2815.28 kg

The percentage mass of a substance is the ratio of the substance in a given substance to that of the total mass of the substance expressed as  a percentage.

The percentage mass of aluminum in Al₂S₃ is calculated as follows:

Molar mass of Al = 27 f

Molar mass of Al₂S₃ = 150 g/mol

Percentage mass of Al = 27/150 * 100%

Percentage mass of Al = 18%

Mass of Al₂S₃ required is calculated with the formula:

Mass of Al₂S₃ = mass of Al * 100/percentage mass of Al

Mass of Al₂S₃ = 506.75 * 100/18

Mass of Al₂S₃ = 2815.28 kg

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The empirical formula of the compound is CHO.

The empirical formula is the formula that shows the ratio of each of the atoms in the compound. Let us now look at the relative percentages of each of the elements and divide them by the relative atomic masses of each of the elements.

C - 40/12,  H - 4.57/1,  O -  54.4/16

C - 3.33,  H- 4.57, O - 3.40

Dividing through by the lowest ratio;

C - 3.33/3.33,  H- 4.57/3.33, O - 3.40//3.33

C - 1, H - 1, O - 1

The empirical formula of the compound is CHO.

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The bed pushes his feet up

Answer:

The reaction is the weight force of the boy

The mass of cesium in 30,84 g of compound  will be  14.92 g. It can be calculated by the mass of Iodine and Cesium which are combining to form the compound.

Weight of metal which is cesium=65.40g

Weight of non metal which is Iodine= 69.75g

Weight of compound= 135.15g

135.15  g of compound contains 65.40 g of cesium

Therefore,

135.15 g of compound= 65.40 g of cesium

1 g of compound = 65.40/ 135.15 g of cesium

=0.4839g of cesium

30.84 g of compound contains 0.4839× 30.84 g of cesium

=14.92 g of cesium.

So , by using equality and proportion method, weight of cesium will be calculated as 14.92 g.

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[tex]H_3[/tex]CОНС = acetaldehyde  also known as  ethanal ( It is a carbonyl compound)

НC[tex]H_3[/tex] = methane ( it is a hydrocarbon of alkane group)

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Yucca Mountain, Nevada is a potentially viable site for nuclear waste disposal because it is an arid desert with very less precipitation and minimal contamination due to the nuclear waste.

Yucca Mountain, Nevada is a wide stretch of 160 km of dry desert with very little rainfall.  This area is mainly composed of dense volcanic rock which contains minute pores which make the process of rainwater infiltration very slow and restricting.

Also, the nuclear waste will be stored in such a way that it is far above the water bodies of the mountain. This way the threat of water contamination is also out of question.

These all factors would effectively protect the waste and prevent the leak of harmful radioactive radiation from the disposal storage.

That being the case, Yucca Mountain, Nevada is a potentially viable site for nuclear waste disposal.

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which compound has the highest magnetic moment

Hydroxide ion concentration - 0.0094 M. The concentration of hydrogen ions is more conveniently expressed as pH, The logarithm of the reciprocal of the concentration of hydrogen ions in gram moles per liter.

The acid-base reaction equation is as follows:

HCl + NaOH ---> NaCl + H₂O

stoichiometry of HCl to NaOH is 1:1

number of HCl moles - 0.16 mol/L x 0.200 L = 0.032 mol

number of NaOH moles - 0.091 mol/L x 0.300 L = 0.0273 mol

The limiting reactant is NaOH therefore the number of HCl moles reacted - 0.0273 mol

the excess amount of HCl moles is - 0.032 - 0.0273 = 0.0047 mol

since HCl is a strong acid

total volume - 200 mL + 300 mL = 500 mL

[HCl] = [H⁺]

therefore [H⁺] = 0.0047 mol / 0.500 mL

[H⁺] = 0.0094 mol/L

hydroxide ion concentration - 0.0094 M

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The concentration in mass-volume percent of the solution is: 5.45 %

To solve this problem the formula and the procedure that we have to use is:

% m/v = m(solute)/v(solution) * 100

Where

Information about the problem:

Applying the concentration formula  we get:

% m/v = m(solute)/v(solution) * 100

% m/v = (13.9 g/255 ml) * 100

% m/v = 0.0545 *100

% m/v =5.45 %

In chemistry a solution is known as a homogeneous mixture of two or more components called:

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At equilibrium, the formation of products from reactants or reactants from products occur at the same rate.

Reaction goes in both direction, both reactants and product are present.

The amount of substance of reactants and products of reaction do not change when chemical reaction is in chemical equilibrium.

In a chemical reaction, chemical equilibrium is the state in which both reactants and products are present in concentrations which not change with time.

Speed of direct and irreversible chemical reaction are equal.

For example, balanced chemical reaction in equilibrium:

3H₂ + N₂ ⇄ 2NH₃

Hydrogen (H₂ ) and nitrogen (N₂) are reactants.

Ammonia (NH₃) is product of the reaction.

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Answer:

D

Explanation:

because all cells in our body help us to build the body because they are multicellular

Answer: D) building blocks of all living things

Explanation:

1600 - 1850 cm-1 wavenumber corresponds to the C=O double bond region on an IR spectrum.

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Answer:

a. inertia

Explanation:

Inertia means an object will continue its current motion until some force causes its speed or direction to change. The term inertia is properly understood as shorthand for "the principle of inertia" as described by Newton in his first law of motion.

The mass of water displaced by the block is 120 g. The buoyant force on the block is the product of its weight and g value that is 1.17 N.

The force that brings an object to float on a fluid is called buoyant force. It is directly proportional to the displaced mass of the fluid by the submerged object.

Given that, density of water = 1 g/cm³

volume of block = 120 cm³

then, displaced mass of water = density of water × volume of block

m = 120 g = 0.12 kg

Buoyant force = mass displaced × g

Fb = 0.12 × 9.8 N = 1.17 N

Therefore, the buoyant force on the block is 1.17 N.

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Any reaction that has a catalyst added to it has its activation energy reduced, accelerating the rate of the reaction. Although it doesn't initiate the reaction, it lowers the energy needed to do so. Furthermore, doing so causes the catalyzed reactions to produce an intermediate product.

The catalyst's properties are the key idea used to address this question. The molecules known as catalysts have a strong tendency to alter the rate of a reaction. It should be noted that the catalyst itself does not change significantly.

A catalyst accelerates both the forward and backward reactions at a faster rate. It also lowers the activation energy for both forward and backward reaction.

Without a catalyst, the reaction would speed up in any direction. However, a catalyst can never increase the rate of a reaction in both directions at the same time—neither forward nor backward. A catalyst lowers the activation energies of both forward and backward reactions, causing them to accelerate in the desired direction.

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The Balanced equation is:

[tex]2Al(NO_3)_3 (aq) + 3Na_2S (aq) \rightarrow Al_2S_3 (s) + 6NaNO_3 (aq)[/tex]

A chemical reaction that has a balanced equation is one in which the total charge and the number of atoms in each of the components, for both the products and the reactants, are exactly equal. Simply said, each side of the reaction process has an equal mass and charge.

A chemically balanced equation is a symbolic representation of a chemical reaction that consists of symbols and formulas, in which a + sign separates the entities in both the reactant and product lists on the left and right, respectively, products and the reactants and an arrow pointing in the direction of the products to indicate the reaction's direction. The critical values of the stoichiometric numbers are shown as coefficients alongside the symbols and formulas of the entities.

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The answer is ppm that is parts per million.

This stands for "parts per million" and can also be written as mg/L (milligrams per liter). The mass of a chemical or contamination per volume of water is the unit of measurement here. On a lab report, ppm or mg/L both mean the same thing. The solution makes up 0.0001 percent of 1 PPM. It is equivalent to 1 mg in other measures like milligrams per kilogram, milligrams per liter of water, etc. Additionally, it is the 1/1,000,000th of something. PPM stands for one (1/,000,000) (defect or incident). Previously, suppliers were deemed to be of high quality if their failure rate was less than 10,000 PPM, or 1%.

The complete question is- A Lake Contains 0.05 Mg PO 2-/L (Orthophosphate). What Is the Concentration Expressed In:

A. Ppm

B. M (Molar)

C. Mg PO-P/L

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The final volume of the gas is 123.9ml.

Given here, the pressure of the gas (P)= 783 torr = 1.03 atm (1atm = 760torr) and work done = 124joules.

The initial volume given here V₁= 64.9ml Or 64.9× 10⁻³l ( 1ml =10⁻³l) .

Now we calculate the final volume by work done formula,

Work done = P(V₂-V₁)

124 = 1.03( V₂- 64.9× 10⁻³)

On calculating this we get,

V₂= 123.9ml or 123× 10⁻³.

So, the final volume calculated and found to be 123.9ml or 123× 10⁻³.

Work done for a gas is defined as the pressure change multiplied by a volume change in the gas.

Thermodynamics is branch which examines a system’s energy and work. This branch of science, thermodynamics examines how heat, work, temperature, and energy are related. The thermodynamics refers to the transfer of energy from one location or form to another. The fundamental idea is that heat is a type of energy that is equivalent to a specific quantity of mechanical labour.

There are three most important laws of thermodynamics, they are zeroth law, first law, second law and third law of thermodynamics which have specific definitions.

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The values are not precise but they are accurate because they are all close to the true value of 8.9 g/mL.

The density of a solid refers to the ratio of the mass to the volume of the object. This ratio is an intrinsic property because we could use it to identify a substance. In this case, the density of a substance can tell us exactly what the substance is.

Now let us try to obtain the density of the object in each case;

Case 1 = 38.951/56.5 - 52.0 = 8.7 g/mL

Case 2 = 43.830/56.1 - 51.2 = 9.1 g/mL

Case 3 = 41.418/ 57.1 - 52.4 = 8.8 g/mL

It is clear that the values are not precise but they are accurate because they are all close to the true value of 8.9 g/mL.

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The second option Al, Si, I, Au contain halogen that is Iodine (I).

Thus, second option contain halogen.

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Answer:

47.867 U

Explanation:

The average atomic mass of titanium is calculated by taking the weighted average of the atomic masses of its stable isotopes. Simply put, each isotope i will contribute to the average atomic mass of the element in proportion to its decimal abundance, which is simply the percent abundance divided by 100 .

Answer:

I dont really understand what you mean by this but if your asking for us to list subjects than i have a few:

.Biology

.Electricity

.The human body (Anatomy)

. Chemistry

Answer:

Hydrogen = colourless, odourless, extremely flammable

Lithium = lowest density, reacts with water, high specific heat

Oxygen = nonpolar, reactive, tasteless

Helium = low boiling point, low density, low solubility

Nitrogen = odorless, colorless, nonflammable