HURRY WHICH ONE IS IT??

Answer:

Percent yield of reaction is 150%.

Explanation:

Given data:

Percent yield = ?

Actual yield of SO₃ = 586.0 g

Mass of SO₂ = 705.0 g

Mass of O₂ = 80.0 g

Solution:

Chemical equation:

2SO₂ + O₂      →     2SO₃

Number of moles of SO₂:

Number of moles = mass/ molar mass

Number of moles = 586.0 g/ 64.1 g/mol

Number of moles = 9.1 mol

Number of moles of O₂:

Number of moles = mass/ molar mass

Number of moles = 80.0 g/ 32g/mol

Number of moles = 2.5 mol

Now we will compare the mole of SO₃ with O₂ and SO₂.

                      SO₂          :          SO₃

                        2             :            2

                     9.1              :           9.1

                       O₂            :          SO₃

                        1              :            2

                     2.5             :           2×2.5 = 5

The number of moles of SO₃ produced by oxygen are less it will limiting reactant.

Theoretical yield of SO₃:

Mass = number of moles × molar mass

Mass = 5 mol × 80.1 g/mol

Mass = 400.5 g

Percent yield of reaction:

Percent yield = actual yield / theoretical yield  × 100

Percent yield = 586.0 g/ 400.5 g× 100

Percent yield = 1.5× 100

Percent yield = 150%

Answer:

7.61160255091546 moles

Adding an acidic reagent would increase the solubility of Cu(OH)2.

The solubility of Cu(OH)2 is governed by Le Chatelier's principle, which states that a system at equilibrium will shift to counteract any imposed changes. In this case, Cu(OH)2 is a basic compound and adding an acidic reagent would introduce more H+ ions into the system.

The OH- ions produced by the dissociation of Cu(OH)2 would combine with the H+ ions from the acidic reagent to form water, effectively removing OH- ions from the system. To maintain equilibrium, more Cu(OH)2 would dissolve, leading to an increase in its solubility.

When an acidic reagent is added, it increases the concentration of H+ ions in the solution. According to the equilibrium equation, Cu(OH)2 (s) ⇌ Cu2+ (aq) + 2 OH- (ag), the OH- ions are the product of the dissociation of Cu(OH)2.

By adding more H+ ions through an acidic reagent, the system will shift to the right to consume the excess H+ ions. This shift will result in an increase in the concentration of Cu2+ ions and OH- ions, leading to an increased solubility of Cu(OH)2. Therefore, adding an acidic reagent will effectively increase the solubility of Cu(OH)2.

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Dipole-dipole interaction & London dispersion force

Hope this helps, have a nice day :))

Dipole-dipole and London dispersion forces are the two kind of intermolecular forces act between a hydrogen cyanide molecule and a nitrosyl chloride molecule.

Dipole-dipole and London dispersion forces are the main intermolecular interactions that interact between molecules of hydrogen cyanide (HCN) and nitrosyl chloride (NOCl). Because nitrogen is more electronegative than hydrogen, it forms a polar covalent bond with hydrogen. This causes the nitrogen atom to have a partial negative charge and the hydrogen atom to have a partial positive charge. Additionally, the chlorine and nitrogen atoms in NOCl form a polar covalent connection due to chlorine's stronger electronegative charge. As a result, the chlorine atom acquires a partial negative charge while the nitrogen atom acquires a partial positive charge.

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The ph value of human saliva is between 6.2-7.6 with 6.7 being the average pH

ph value of human saliva is 7 and 6

Answer: the baseball bat transfor its energy in the ball.

Explanation: you hit it with one and find out and tell me what you think what happen.

Answer:

octet rule

Explanation:

It refers to the tendency of atoms to prefer to have eight electrons in the valence shell.

Sulphur (S) is the species that has the greatest rate of appearance in the given reaction.

2 H₂S + O₂ → 2 S + 2 H₂O

Sulphur (S) is the species that has the greatest rate of appearance in the given reaction . This can be determined by analysing the reaction's stoichiometry. Two molecules of sulphur (S) are created for each O2 molecule that interacts. The reactant species, H₂S and O₂, on the other hand, have coefficients of 2 and 1, respectively.

Therefore, the rate at which sulfur (S) appears is twice the rate of appearance of any other species in the reaction.

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Answer:

52.8 Liters

Explanation:

Gay-Lussacs law states that P1/T1 = P2/T2

if:

then:

45/298.1 = P2/328.1

P2 = 52.8

The new volume of the balloon is 52.8 Liters this can be calculated by using gas laws.

Charles law states the volume occupied by a fixed amount of gas is directly proportional to its absolute temperature. It is given by

V₁/T₁ = V₂/T₂

What information do we have?

V₁ = 45 L

T₁ = 25 + 273.1 =298.1 K

T₂ = 55 + 273.1 = 328.1 K

To find:

V₂= ?

On substituting the values:

45/298.1 = V₂/328.1

V₂ = 52.8 L

Thus, the volume of the balloon is 52.8 liters.

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The mass of octane, C8H18 that must be injected to react with all of the oxygen in the cylinder to produce carbon dioxide and water is 0.14 g.

The balanced equation for the combustion of octane is:2C8H18 + 25O2 → 16CO2 + 18H2OFrom the above balanced chemical equation, we can see that 25 moles of O2 react with 2 moles of C8H18.

So, 12.5 moles of O2 will react with 1 mole of C8H18. We can use the ideal gas law PV = nRT to calculate the moles of oxygen present in the cylinder.

Here, we need to use the partial pressure of oxygen only since we are interested in the moles of oxygen only.

O2 = 21.00% × 101.0 kPa = 21.21 kPaV = 500.0 mL = 500.0/1000 = 0.5000 L (convert mL to L)R = 8.314 J/mol K (gas constant).

We have,PV = nRTn = PV/RTn = (21.21 × 10^3 Pa) × (0.5000 × 10^-3 m^3) / (8.314 J/mol K × 328.15 K) = 0.01578 moles of O2.

Since 12.5 moles of O2 react with 1 mole of C8H18,0.01578 moles of O2 will react with= (0.01578 moles × 1 mole C8H18)/12.5 moles = 0.001262 moles of C8H18

The molar mass of C8H18 is = 8 × 12.01 + 18 × 1.01 = 114.16 g/mol.

So, the mass of C8H18 required is = 0.001262 × 114.16 = 0.1445 g or 0.14 g (approx.)

Therefore, the mass of octane, C8H18 that must be injected to react with all of the oxygen in the cylinder to produce carbon dioxide and water is 0.14 g.

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Answer:

solubility- the degree to which a material will dissolve in another substance

mixture- different materials placed together but keeping their own properties

solution- a mixture in which substances are spread out evenly and will not settle

Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 1.98×10²²molecules of aspartame are present in 10.00 grams of aspartame.

The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.

Mathematically,

mole =given mass ÷ molar mass

       =10.00  ÷ 294.30

       =0.033moles

number of molecules= Avogadro's number × number of moles

                                   =6.022×10²³× 0.033

                                 = 1.98×10²²molecules

Therefore, 1.98×10²²molecules of aspartame are present in 10.00 grams of aspartame.

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Answer:

the answer is b

Explanation: its b because for number won ik the answer because i took the test early and made a 100 because i am

42.4 ml is the volume in milliliters of the lead ball if a lead ball is added to a graduated cylinder containing 50.6 ml of water.

A tall narrow container with a volume scale is used especially for measuring liquids.

The graduated cylinder contains water

mL is a volume unit.

Water volume = 50.6 ml

The lead ball caused an increase in volume from 50.6 ml to 93.0 mL.

The new volume is the lead ball volume plus the original water volume :

Final volume = Vlead ball+ Water original volume

\(93.0 mL= V_(lead ball) +50.6 ml\)

\(V_(lead ball) = 93.0 mL - 50.6 ml\)

\(V_(lead ball) = 42.4 ml\)

Hence, 42.4 ml is the volume in milliliters of the lead ball.

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Nuclear Fission

Nuclear fission, subdivision of a heavy atomic nucleus, such as that of uranium or plutonium, into two fragments of roughly equal mass. The process is accompanied by the release of a large amount of energy. In nuclear fission the nucleus of an atom breaks up into two lighter nuclei.

Nuclear fission is a process where the nucleus of an atom is split into two or more smaller nuclei, known as fission products. The fission of heavy elements is an exothermic reaction, and huge amounts of energy are released in the process.

Answer:

53.6 g

Explanation:

Step 1: Write the balanced equation

2 Zn + Pb(SO₄)₂ ⇒ 2 ZnSO₄ + Pb

Step 2: Calculate the moles of ZnSO₄ produced from 0.332 moles of Zn

The molar ratio of Zn to ZnSO₄ is 2:2. The moles of ZnSO₄ produced are 2/2 × 0.0332 mol = 0.0332 mol.

Step 3: Calculate the mass corresponding to 0.332 moles of ZnSO₄

The molar mass of ZnSO₄ is 161.44 g/mol.

0.332 mol × 161.44 g/mol = 53.6 g

If the compound phosphorus pentaiodide (PI5) has no lone pairs, it would take the shape of a Trigonal bipyramid. The correct option is C.

Phosphorus pentaiodide is an inorganic compound. It was claimed to be discovered in the 1900s, but it is still disputed because the size of the iodine atom is very large, and it can not be attached to one phosphorus. Its formula is PI₅.

A trigonal bipyramid is a shape that has three sides like a triangle. It is made when two pyramids are joined with their base. So, bipyramid means two pyramids and trigonal because of three sides.

If phosphorus pentaiodide exists, then it will be trigonal bipyramid shaped.

Thus, the correct option is C. Trigonal bipyramid.

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The ratio of neutrons to protons, or the N/Z ratio, plays a crucial role in determining a nucleus' stability. The range of N/Z ratios in which nuclei are stable is generally referred to as the belt of stability.

If the forces between the constituents of the nucleus are equal, an atom is stable. If these forces are out of balance or if the nucleus has an excessive amount of internal energy, an atom is unstable (radioactive).

Z = 104 for Rutherfordium, element 104. The isotopes 261Rf and 262Rf, having masses of 261 and 262, respectively, have the longest half-lives. Accordingly, N/Z ratios are:

261Rf: N/Z = (261-104)/157 = 1.08

262Rf: N/Z = (262-104)/158 = 1.09

These N/Z ratios are a little bit higher than the average belt of stability values, which are about 1.0 for heavy nuclei. These isotopes are thought to be reasonably stable because they are close enough.

Z = 109 for Meitnerium, element 109. The isotopes 278Mt and 282Mt, with masses of 278 and 282, respectively, have the longest half-lives. Accordingly, N/Z ratios are:

278Mt: N/Z

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The statement about cells and genes that is false is a) the sequencing of bases within a gene is of little significance.

The sequence of bases is of major significance in an individual and hence option a is false. The sequences of bases in a gene help in the formation of specified proteins that carry out the functioning in an individual. The sequencing of the bases is also important as any change in the bases can cause the wrong proteins to be formed which might cause the ultimate death of an individual if a major kind of protein is not produced.

The sequence of bases also determines if there are chances of any disorder to occur in an individual due to the pattern of bases being changed.

The question will correctly be written as:

Which of the following statements about cells and genes is false? multiple choice

a) the sequencing of bases within a gene is of little significance.

b) each chromosome contains hundreds to thousands of genes.

c) each cell contains 23 pairs of chromosomes.

d) our bodies are made up of about 260 different types of cells.

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The reaction time decreases as the temperature increases of the reaction mixture increases.

A sample record of results is:

An increase in temperature leads to an increase in reaction rate or a decrease in reaction time.

The increase in temperature provides more thermal energy to the reactant molecules, which leads to an increase in the average kinetic energy of the molecules. As a result, more reactant molecules have sufficient energy to overcome the activation energy barrier and undergo successful collisions, leading to an increased reaction rate.

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From the atomic clock that utilizes C-133 which has an approximate frequency of 9.193 x 109 Hz. The wavelength of the energy is calculated to be 0.0326m.

From the given information:

Recall that:

The wavelength is the spatial successive distance between two crests of a wave and can be expressed by the formula:

\(\mathbf{\lambda = \dfrac{c}{f}}\)

\(\mathbf{\lambda = \dfrac{3.00 \times 10^8 \ m/s }{9.193 \times 10^9 \ 1/s}}\)

\(\mathbf{\lambda =0.0326 \ m}\)

Therefore, we can conclude that the wavelength of the atomic clock is 0.0326m. As such Option D is correct.

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The value of density in the required units is \(\rm \rho = 2.4\times 10^{-5} lb/in^{3}\)

Density, mass of a unit volume of a material substance. The formula for density is

d = M/V

where d is density, M is mass, and V is volume.

Density is commonly expressed in units of grams per cubic centimetre.

In the given question

Density given is 0.668 g/L

1 lb = 454grams.

1L = 1000 cm³

1 inch = 2.54 cm

Density in pounds per cubic inch =

\(\rm \rho = 0.668 \times \dfrac{(1 \;lb)(1 grams)}{454\; grams}\times \dfrac{(1 L)(2.54)^{3}(1 cm^{3})}{1000cm^{3}(1\;L)(1 in^{3})}\)

\(\rm \rho = 2.4\times 10^{-5} lb/in^{3}\)

Therefore the value of density in the required units is \(\rm \rho = 2.4\times 10^{-5} lb/in^{3}\).

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Although there is some variation amongst tissues, the physiologically typical intracellular pH ranges from 7.0 to 7.4. Skeletal muscle in mammals typically has a pHi of 6.8 to 7.1.

A cell is the basic membrane-bound living thing and can either have one or more cells. All the molecules required for an organism to function are found in cells. An atomic is 10-10m in size. In contrast, a cellular is 10-6 metres in size. Because all cells are composed of atoms, they are therefore bigger than atoms.

Acid excretion, efflux through plasma membranes, and buffering mechanisms all work together to precisely preserve the pH of body fluids. Protons are extruded from the cytosol into the extracellular space through the organic cation transporter (MCT) and the Na+/H+ exchanger (NHE).

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Answer: Boiling because it makes the molecules in water bounce around.

Hope it helps.

Answer:

5 atoms

Explanation:

i hope that helps

Answer:

heat wave

Explanation:

A high pressure system is a whirling mass of cool, dry air that generally brings fair weather and light winds. When viewed from above, winds spiral out of a high-pressure center in a clockwise rotation in the Northern Hemisphere.

The relationship between the rate of diffusion r, and d is r ∝ 1/√d.

The relationship between the rate of diffusion (r) and the density of a gas (d) can be explained using Graham's law of diffusion. According to this law, the rate of diffusion of a gas is inversely proportional to the square root of its density. Mathematically, it can be expressed as:

r ∝ 1/√d

where the symbol '∝' represents 'proportional to'. The constant of proportionality (k) can be introduced to this equation as:

r = k/√d

This equation shows that as the density of a gas increases, its rate of diffusion decreases. This is because denser gases have more molecules per unit volume and thus, they experience greater intermolecular collisions that hinder their movement. Therefore, it requires more energy for them to diffuse through a medium compared to less dense gases.

The relationship between the rate of diffusion and density is particularly important in understanding the behavior of gases in different environments. For instance, in a gas chromatography column, the rate of diffusion of a gas determines how quickly it moves through the column and separates from other components. Similarly, in the Earth's atmosphere, the rate of diffusion of greenhouse gases such as carbon dioxide affects their concentration and hence, their impact on climate change.

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Answer:

1. Non-target

2. Bycatch

Explanation:

In the fishing industry, the main aim of the industry is to capture fishes that can be used or eaten and sell. A variety of fishes are captured for this purpose and since they are used therefore are known as Target catch.

But there are some species which has to be discarded because they are toxic and not useful. These non-useful species like eel which gets captured in the net while capturing other fishes are known as Non-target fish.

The eel fish which gets captured is known as bycatch fishes in the fishing operation.

Thus, Non-target and Bycatch are the correct answer.

Answer:

Its just bycatch

Explanation:

The eel species is called a(n) bycatch of the fishing operation.