Which of the following particles are the least massive in comparison to the others?

Answer:

A

Explanation:

because I know it from doing a test

Doing a greater amount of work than the of work done on the machine is impossible for a machine to do. The energy given the system might loss some fraction and cannot be converted completely to output work.

Work done is a physical quantity that describes the result of a force or how effectively the force made a displacement. The force applied on a body if results in a displacement of the body, the force is said to be done work on the body.

Work done is a vector quantity, having both magnitude and direction. According to thermodynamic concept, then it is impossible to convert all the input energy into work done.

It is impossible to achieve a 100% of efficiency or more by a machine. Hence, doing greater amount of work than the input is impossible for a machine.

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Answer:

A or do a greater amount of work than the amount of work done on the machine

Explanation:

Bc i did the test in edge

Answer:

Composition: All hydrocarbons are made up of only two types of atoms: carbon and hydrogen. They are like building blocks that contain carbon and hydrogen stuck together.

Organic Nature: Hydrocarbons are special because they are part of a group of compounds that come from living things or things that were once alive. They have carbon and hydrogen in them, which is what makes them different from other types of compounds.

Explanation:

Scientists could begin to place the table on a single sheet of paper. Moseley made revisions to the periodic table that resolved some of the problems with Mendeleev’s version. Option D is correct.

The periodic table is an arrangement on a single sheet of paper where all the chemical elements are placed on the basis of the atomic number, not the mass number which is easy to understand too.

The periodic table is a series of elements as they consist of 4 blocks which are s, p, d, and f, and can be placed elements on the basis of the electronic configuration on the outermost shell.

Therefore, Option D is correct. Scientists could begin to place the table on a single sheet of paper. Moseley made revisions to the periodic table that resolved some of the problems with Mendeleev’s version.

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The solute is carbon dioxide and solvent is water in soda water.

Soda water is a solution of carbon dioxide (the solute) in water (the solvent). Carbon dioxide is a gas that is dissolved in the water to make the soda water. The carbon dioxide provides the fizz and the water provides the base for the soda.Soda water is a solution of carbon dioxide gas in water.This reaction's chemical equation is:

CO2 + H2O → H2CO3 (carbonic acid)

Soda water, sometimes referred to as seltzer water, is a type of carbonated water. The carbonation comes from the introduction of carbon dioxide gas which is added to the water under pressure. Soda water has a bubbly and slightly acidic taste and is often used as a mixer for alcoholic drinks, as well as for a refreshing drink on its own.

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Using standard thermodynamic data at 298K, the entropy changes of the environment when 1.59 mol of P₄O₁₀ (s) is irritated at standard conditions is - 45339.5 J/K

∆H°f product is the total enthalpy of standard formation based on the product substances. ∆H°f reactants is the total enthalpy of the standard formation based on the reactants.

We know:

∆H⁰f (P₄O₁₀) = - 2984 KJ/mol

∆H⁰f (H₂O) = - 285.8 KJ/mol

∆H⁰f (4H₃PO₄) = - 1288.3 KJ/mol

The e reaction is:

                               P₄O₁₀ (s) + 6H₂O (l) → 4H₃PO₄ (aq)

∆H⁰rxn = ∆H⁰f  products - ∆H⁰f  (reactants)

∆H⁰rxn = [4∆H⁰f (P₄O₁₀)] - [1 ∆H⁰f (P₄O₁₀) + 6 ∆H⁰f (H₂O)]

∆H⁰rxn = [4(- 1288.3)] - [ 1(- 2984) + 6(- 285.8)]

∆H⁰rxn = [ - 5153.2] - [ -11936 - 1714.8]

∆H⁰rxn = [- 5153.2] - [-13650.8]

∆H⁰rxn = - 5153.2 + 13650.8

∆H⁰rxn = 8497.6 KJ

Therefore, ∆H⁰rxn for this reaction is + 8497.6 KJ.

From the above-balanced chemical equation, we can write,

For the reaction of 1 mol of P₄O₁₀,

∆H⁰rxn value = + 8497.6 KJ

Then, for the reaction of 1.59 mol of P₄O₁₀, ∆H0rxn value

= + 8497.6 KJ/1 mol x 1.59 mol

= + 13511.184 KJ

We know,

∆S⁰surroundings = - ∆H⁰rxn/ T

Where,

∆S⁰surroundings = standard entropy changes of the surroundings

∆H⁰rxn = standard enthalpy changes of the reaction

T = temperature in Kelvin

Here,

∆H0rxn = 13511.184 KJ = 13511.184 x 10³ J = 13511184 J

T = 298 K

Now,

∆S⁰surroundings = - ∆H⁰rxn/ T

∆S⁰surroundings = - 13511184J/298 K

∆S⁰surroundings = - 45339.5 J/K

Therefore, the entropy changes for the surroundings when 1.59 mol of P₄O₁₀ reacts at standard conditions is - 45339.5 J/K

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Answer:

Putting it in water, and see the displacement of the water, or just measuring its weight and devide it by the gravitational pull

The ionic equation of the reaction between hydrogen sulfide and MnO4- is as follows:

5H2S + 2MnO4- + 6 H+ → 2(Mn)2+ + 8H2O + 5S

According to this question, hydrogen sulfide reduces MnO4- to Mn2+, in an aqueous solution.

Elemental sulfur is produced as a gaseous product. The net ionic equation of this reaction is as follows:

5H2S + 2MnO4- + 6 H+ → 2(Mn)2+ + 8H2O + 5S

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Answer:

I guess the answer is compound

Explanation:

Coz compound it is on there playing with me again Go ahead and paste it in the class

Answer:

mole ratio, which is equivalent to a 1;1 mole ratio, to a gram ratio. This means that when the reaction consumes 84.03 g of carbon monoxide, it should theoretically produce 132.03 g of carbon dioxide. Use this gram ratio to calculate the theoretical yield for your reaction.

Explanation:

Answer:

cake

Explanation:

now here me out, no cake is specified so i can say i want a cake that has pizza on it, take off the pizza, and eat it, this goes with any other food without me having to eat the cake

After the body is cleaned, the body is weighed and measured before being placed on the autopsy table for reexamination. The autopsy table is typically a slanted, aluminum table with raised edges that has several faucets and drains used to wash away collecting blood during the internal investigation.

Answer:

A table used to scientifically determine the cause of death of a human or animal

Explanation:

The mass of Na₃PO₄ formed during the reaction is 328 g.

The balanced chemical equation for the reaction is:

\(3NaOH + Na_3PO_4 - > 3Na_2PO_4 + H_2O\)

From the equation, we can see that 3 moles of NaOH produce 1 mole of Na₃PO₄.

Given that 2.0 moles of Na₃PO₄ is produced, we can set up a proportion to find the amount of NaOH required:

3 mol NaOH / 1 mol Na₃PO₄ = x mol NaOH / 2.0 mol Na3PO4

Solving for x, we get:

x = (3 mol NaOH / 1 mol Na₃PO₄) × (2.0 mol Na₃PO₄ / 1) = 6.0 mol NaOH

So, 6.0 moles of NaOH are required to produce 2.0 moles of Na₃PO₄.

To find the mass of Na₃PO₄ produced, we can use its molar mass:

mass = moles × molar mass = 2.0 mol × 164 g/mol = 328 g

Therefore, the mass of Na₃PO₄ formed during the reaction is 328 g.

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Answer:

i would also like to know

Explanation:

plz..............................................

Answer:

Strong Acid

Explanation:

Hope this helps! :)

Answer: The minimum volume of the container must be 460.54 L.

Explanation:

Density is defined as the ratio of mass and volume of a substance.

\(\text{Density}=\frac{\text{Mass}}{\text{Volume}} \)           ......(1)

Given values:

Volume of water = 0.37 L = 370 mL               (Conversion factor: 1 L = 1000 mL)

Density of water = 1.00 g/mL

Putting values in equation 1, we get:

\(\text{Mass of water}=(1.00g/mL\times 370mL)=370g\)

The number of moles is defined as the ratio of the mass of a substance to its molar mass.

The equation used is:

\(\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}\) ......(2)

Given mass of water = 370 g

Molar mass of water = 18 g/mol

Putting values in equation 2, we get:

\(\text{Moles of water}=\frac{370g}{18g/mol}=20.56mol\)

At STP conditions:

1 mole of a gas occupies 22.4 L of volume

Applying unitary method:

20.56 moles of water will occupy = \(\frac{22.4L}{1mol}\times 20.56mol=460.54L\) of volume.

Hence, the minimum volume of the container must be 460.54 L.

The proton number for the particle missing from this beta decay is 4 and is therefore denoted as option C.

This is referred to as a type of radioactive decay in which a proton is transformed into a neutron or vice versa inside the nucleus of the radioactive sample.

Proton number is also referred to as atomic number and in his scenario, the subscripts in the products and reactants have to be equal. This therefore means that 3 = x - 1

x = 3+1 = 4 which is therefore the reason why it was chosen as the correct choice.

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(c) 4  is the proton number for the particle missing from this beta decay

A stable subatomic particle with the symbol P, H+, or 1H+, a proton has an electric charge of +1 e. Its mass is 1,836 times greater than that of an electron and only slightly less than that of a neutron. Nucleons are the collective name for protons and neutrons, which have masses of roughly one atomic mass unit apiece.

An atom's mass is its atomic mass. Although the kilogram is the SI measure of mass, the unified atomic mass unit, or dalton, is a common way to express atomic mass. An unbound carbon-12 atom in its ground state has a mass of 112 of a Da.

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Answer:

• The closing of the frontier

Explanation:

•• The closing of the frontier• The closing of the frontier• The closing of the frontier• The closing of the frontier• The closing of the frontier

Answer:

B and C

Explanation:

The different types of motor nerves transmit information to and from muscles, and they connect to muscle fibers through the motor endplate.

Answer:

Given:

Volume of wet hydrogen gas (Vwet) = 4.00 L

Pressure (P) = 737 torr

Temperature (Twet) = 23.0°C = 296 K

To find:

Volume of dry hydrogen gas (Vdry) at STP (Tdry = 273 K and Pdry = 760 torr)

Solution:

Convert temperature to Kelvin: T = Twet = 23.0°C + 273 = 296 K

Use the combined gas law: P1V1/T1 = P2V2/T2

Plug in values: P1 = P, V1 = Vwet, T1 = T, P2 = Pdry = 760 torr, T2 = Tdry = 273 K

Solve for V2 (Vdry): Vdry = Vwet x Pdry x T / P x Tdry

Substitute values: Vdry = 4.00 L x 760 torr x 296 K / 737 torr x 273 K

Simplify: Vdry ≈ 3.48 L

Therefore, the volume of dry hydrogen gas at STP is approximately 3.48 L.

So the answer key is correct, but their method may have been incorrect.

Answer:

Atoms are made of protons, neutrons and electrons.

Explanation:

The Dalton's atomic theory was an early attempt at describing the properties of atoms. It stipulated that atoms were the smallest indivisible particle of a substance. Chemical reactions occur as a result of a combination or separation of atoms. Atoms of the same element are exactly alike and differ from atoms of other elements. Atoms can neither be created nor destroyed.

As time went on, modern scientific evidence began to modify the original postulates of the Dalton's atomic theory. It was not postulated in 1805 that atoms were composed of subatomic particles; electrons, neutrons and protons. Dalton's theory held the atom to be 'indivisible'. However in 1897, JJ Thompson discovered the electron. Subsequently, the proton and neutrons were discovered. This shows that the atom in itself consisted of even smaller particles.

287.13 grams of Al₂O₃ were decomposed. Therefore, option A is correct.

The term molar mass is defined as the mass in grams of one mole of the compound. A mole of any substance is 6.022 × 10²³ molecules. It is called as Avogadro's number. The molar mass is a bulk property, it is not molecular, property of a substance.

2Al₂O₃ ⇒ 4Al + 3O₂

Thus, 4 mol of Al combine with 3 mol of oxygen to form 2 mol of Al₂O₃.

2 mol of Al corresponds to 2 × 27 = 54g

Thus, the weight of Al used in the reaction is 108 g.

Molar mass of Al₂O₃ is 101.96g/mol.

5.63 moles of Al = 5.63 × 54 / 101.96

= 287.13 grams

Thus, 287.13 grams of Al₂0₃ were decomposed, option A is correct.

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Answer:

5

Explanation:

If an atom can complete an octet (8 electrons) by gaining 3 electrons, then the no. of valence electrons in that atom is ; 8 - 3 = 5

Answer:

See below

Explanation:

370 g  /  .090 g/l = _____?___   liters

take that answer    then :

  ? liters   /   22.4 liters / mole   = # moles     done!

There are approximately 183.50 moles of hydrogen gas in 370.g of hydrogen gas.

The number of moles in 370.g of hydrogen gas using the given information.

In the given example,

Density of hydrogen gas = 0.090 g/L

Molar volume at normal pressure and 0.214°C = 22.4 L/mol

So, we  calculate the volume of hydrogen gas (in L) using the given mass and density:

Volume (in L) = mass (in g) / density (in g/L)

Volume (in L) = 370.g / 0.090 g/L

Volume (in L) ≈ 4111.11 L

By using the molar volume, calculate the number of moles:

moles = Volume (in L) / Molar volume (in L/mol)

moles = 4111.11 L / 22.4 L/mol

moles ≈ 183.50 moles (rounded to two decimal places)

Hence, there are approximately 183.50 moles of hydrogen gas in 370.g of hydrogen gas.

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Answer:

iron and nickel (liquid metal )

Explanation:

The outer core is the third layer of the Earth. It is the only liquid layer, and is mainly made up of the metals iron and nickel, as well as small amounts of other substances. The outer core is responsible for Earth’s magnetic field. As Earth spins on its axis, the iron inside the liquid outer core moves around

Answer:

The outer core is the third layer of the Earth. It is the only liquid layer, and is mainly made up of the metals iron and nickel, as well as small amounts of other substances.

Explanation:

Answer:

Explanation:

B

Answer:

[HI] = 0.704mol

[H2] = 0.048mol

[I2] = 0.148mol

Explanation:

Based on the equilibrium:

H2(g)+I2(g) --> 2HI(g)

The equilibrium constant, K, is defined as:

K = 70 = [HI]² / [H2] [I2]

Where [] could be taken as the moles in equilibrium of each reactant

To know the direction of the equilibrium we need to find Q with the initial moles of each species:

Q = [0.200mol]² / [0.300mol] [0.400mol]

Q = 0.333

As Q < K, the reaction will shift to the right producing more HI. The equilibrium moles are:

[HI] = 0.200mol + 2X

[H2] = 0.300mol - X

[I2] = 0.400mol - X

Replacing in K:

70 = [0.200 + 2X ]² / [0.300 - X] [0.400 - X]

70 = 0.04 + 0.8 X + 4 X² / 0.12 - 0.7 X + X²

8.4 - 49 X + 70 X² = 0.04 + 0.8 X + 4 X²

8.36 - 49.8X + 66X² = 0

Solving for X:

X = 0.252 moles. Right solution

X = 0.502 moles. False solution. Produce negative moles.

Replacing:

[HI] = 0.200mol + 2*0.252 mol

[H2] = 0.300mol - 0.252 mol

[I2] = 0.400mol - 0.252 mol

[HI] = 0.704mol

[H2] = 0.048mol

[I2] = 0.148mol